Home / 28,869.79-39,839.93-16,123.19

Finding the Fourth Proportional to 28,869.79, 39,839.93 and 16,123.19

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Solution

The fourth proportional to 28,869.79, 39,839.93 and 16,123.19 is: 22,249.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,869.79 : 39,839.93 = 16,123.19 : x
  2. Step 2: Convert to fraction form
    28,869.79/39,839.93 = 16,123.19/x
  3. Step 3: Cross multiply
    28,869.79x = 39,839.93 × 16,123.19
  4. Step 4: Simplify right side
    28,869.79x = 642,346,760.98
  5. Step 5: Solve for x
    x = 642,346,760.98/28,869.79
  6. Step 6: Final answer
    x = 22,249.79

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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.