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Finding the Fourth Proportional to 13,070.18, 18,037.18 and 7,102.18

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Solution

The fourth proportional to 13,070.18, 18,037.18 and 7,102.18 is: 9,801.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,070.18 : 18,037.18 = 7,102.18 : x
  2. Step 2: Convert to fraction form
    13,070.18/18,037.18 = 7,102.18/x
  3. Step 3: Cross multiply
    13,070.18x = 18,037.18 × 7,102.18
  4. Step 4: Simplify right side
    13,070.18x = 128,103,299.05
  5. Step 5: Solve for x
    x = 128,103,299.05/13,070.18
  6. Step 6: Final answer
    x = 9,801.19

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Half scale
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Double scale
Find fourth proportional to 13,071.18, 18,038.56 and 7,103.18
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.