Home / 28,382.57-39,169.15-15,807.32

Finding the Fourth Proportional to 28,382.57, 39,169.15 and 15,807.32

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Solution

The fourth proportional to 28,382.57, 39,169.15 and 15,807.32 is: 21,814.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,382.57 : 39,169.15 = 15,807.32 : x
  2. Step 2: Convert to fraction form
    28,382.57/39,169.15 = 15,807.32/x
  3. Step 3: Cross multiply
    28,382.57x = 39,169.15 × 15,807.32
  4. Step 4: Simplify right side
    28,382.57x = 619,159,092.33
  5. Step 5: Solve for x
    x = 619,159,092.33/28,382.57
  6. Step 6: Final answer
    x = 21,814.77

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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.