Home / 13,760.19-18,989.04-7,472.55

Finding the Fourth Proportional to 13,760.19, 18,989.04 and 7,472.55

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Solution

The fourth proportional to 13,760.19, 18,989.04 and 7,472.55 is: 10,312.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,760.19 : 18,989.04 = 7,472.55 : x
  2. Step 2: Convert to fraction form
    13,760.19/18,989.04 = 7,472.55/x
  3. Step 3: Cross multiply
    13,760.19x = 18,989.04 × 7,472.55
  4. Step 4: Simplify right side
    13,760.19x = 141,896,550.85
  5. Step 5: Solve for x
    x = 141,896,550.85/13,760.19
  6. Step 6: Final answer
    x = 10,312.11

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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.