Home / 28,781.45-39,718.37-16,206.29

Finding the Fourth Proportional to 28,781.45, 39,718.37 and 16,206.29

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Solution

The fourth proportional to 28,781.45, 39,718.37 and 16,206.29 is: 22,364.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,781.45 : 39,718.37 = 16,206.29 : x
  2. Step 2: Convert to fraction form
    28,781.45/39,718.37 = 16,206.29/x
  3. Step 3: Cross multiply
    28,781.45x = 39,718.37 × 16,206.29
  4. Step 4: Simplify right side
    28,781.45x = 643,687,341.52
  5. Step 5: Solve for x
    x = 643,687,341.52/28,781.45
  6. Step 6: Final answer
    x = 22,364.66

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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.