Home / 28,981.76-39,998.40-16,406.24

Finding the Fourth Proportional to 28,981.76, 39,998.40 and 16,406.24

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Solution

The fourth proportional to 28,981.76, 39,998.40 and 16,406.24 is: 22,642.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,981.76 : 39,998.40 = 16,406.24 : x
  2. Step 2: Convert to fraction form
    28,981.76/39,998.40 = 16,406.24/x
  3. Step 3: Cross multiply
    28,981.76x = 39,998.40 × 16,406.24
  4. Step 4: Simplify right side
    28,981.76x = 656,223,350.02
  5. Step 5: Solve for x
    x = 656,223,350.02/28,981.76
  6. Step 6: Final answer
    x = 22,642.63

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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.