Home / 28,250.25-38,985.24-15,503.65

Finding the Fourth Proportional to 28,250.25, 38,985.24 and 15,503.65

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Solution

The fourth proportional to 28,250.25, 38,985.24 and 15,503.65 is: 21,394.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,250.25 : 38,985.24 = 15,503.65 : x
  2. Step 2: Convert to fraction form
    28,250.25/38,985.24 = 15,503.65/x
  3. Step 3: Cross multiply
    28,250.25x = 38,985.24 × 15,503.65
  4. Step 4: Simplify right side
    28,250.25x = 604,413,516.13
  5. Step 5: Solve for x
    x = 604,413,516.13/28,250.25
  6. Step 6: Final answer
    x = 21,394.98

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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.