Home / 13,455.91-18,569.31-7,487.53

Finding the Fourth Proportional to 13,455.91, 18,569.31 and 7,487.53

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Solution

The fourth proportional to 13,455.91, 18,569.31 and 7,487.53 is: 10,332.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,455.91 : 18,569.31 = 7,487.53 : x
  2. Step 2: Convert to fraction form
    13,455.91/18,569.31 = 7,487.53/x
  3. Step 3: Cross multiply
    13,455.91x = 18,569.31 × 7,487.53
  4. Step 4: Simplify right side
    13,455.91x = 139,038,265.70
  5. Step 5: Solve for x
    x = 139,038,265.70/13,455.91
  6. Step 6: Final answer
    x = 10,332.88

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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.