Home / 21,307.46-29,385.20-13,350.56

Finding the Fourth Proportional to 21,307.46, 29,385.20 and 13,350.56

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Solution

The fourth proportional to 21,307.46, 29,385.20 and 13,350.56 is: 18,411.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,307.46 : 29,385.20 = 13,350.56 : x
  2. Step 2: Convert to fraction form
    21,307.46/29,385.20 = 13,350.56/x
  3. Step 3: Cross multiply
    21,307.46x = 29,385.20 × 13,350.56
  4. Step 4: Simplify right side
    21,307.46x = 392,308,875.71
  5. Step 5: Solve for x
    x = 392,308,875.71/21,307.46
  6. Step 6: Final answer
    x = 18,411.81

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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.