Home / 28,382.67-39,169.88-15,807.39

Finding the Fourth Proportional to 28,382.67, 39,169.88 and 15,807.39

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Solution

The fourth proportional to 28,382.67, 39,169.88 and 15,807.39 is: 21,815.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,382.67 : 39,169.88 = 15,807.39 : x
  2. Step 2: Convert to fraction form
    28,382.67/39,169.88 = 15,807.39/x
  3. Step 3: Cross multiply
    28,382.67x = 39,169.88 × 15,807.39
  4. Step 4: Simplify right side
    28,382.67x = 619,173,490.38
  5. Step 5: Solve for x
    x = 619,173,490.38/28,382.67
  6. Step 6: Final answer
    x = 21,815.20

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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.