Home / 28,006.67-38,631.55-16,667.70

Finding the Fourth Proportional to 28,006.67, 38,631.55 and 16,667.70

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Solution

The fourth proportional to 28,006.67, 38,631.55 and 16,667.70 is: 22,990.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,006.67 : 38,631.55 = 16,667.70 : x
  2. Step 2: Convert to fraction form
    28,006.67/38,631.55 = 16,667.70/x
  3. Step 3: Cross multiply
    28,006.67x = 38,631.55 × 16,667.70
  4. Step 4: Simplify right side
    28,006.67x = 643,899,044.27
  5. Step 5: Solve for x
    x = 643,899,044.27/28,006.67
  6. Step 6: Final answer
    x = 22,990.92

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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.