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Finding the Fourth Proportional to 13,038.60, 17,993.10 and 7,070.25

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Solution

The fourth proportional to 13,038.60, 17,993.10 and 7,070.25 is: 9,756.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,038.60 : 17,993.10 = 7,070.25 : x
  2. Step 2: Convert to fraction form
    13,038.60/17,993.10 = 7,070.25/x
  3. Step 3: Cross multiply
    13,038.60x = 17,993.10 × 7,070.25
  4. Step 4: Simplify right side
    13,038.60x = 127,215,715.28
  5. Step 5: Solve for x
    x = 127,215,715.28/13,038.60
  6. Step 6: Final answer
    x = 9,756.85

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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.