Home / 13,125.42-18,113.18-7,460.19

Finding the Fourth Proportional to 13,125.42, 18,113.18 and 7,460.19

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Solution

The fourth proportional to 13,125.42, 18,113.18 and 7,460.19 is: 10,295.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,125.42 : 18,113.18 = 7,460.19 : x
  2. Step 2: Convert to fraction form
    13,125.42/18,113.18 = 7,460.19/x
  3. Step 3: Cross multiply
    13,125.42x = 18,113.18 × 7,460.19
  4. Step 4: Simplify right side
    13,125.42x = 135,127,727.00
  5. Step 5: Solve for x
    x = 135,127,727.00/13,125.42
  6. Step 6: Final answer
    x = 10,295.12

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Half scale
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Double scale
Find fourth proportional to 13,126.42, 18,114.56 and 7,461.19
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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.