Home / 20,382.77-28,115.27-14,725.83

Finding the Fourth Proportional to 20,382.77, 28,115.27 and 14,725.83

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Solution

The fourth proportional to 20,382.77, 28,115.27 and 14,725.83 is: 20,312.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,382.77 : 28,115.27 = 14,725.83 : x
  2. Step 2: Convert to fraction form
    20,382.77/28,115.27 = 14,725.83/x
  3. Step 3: Cross multiply
    20,382.77x = 28,115.27 × 14,725.83
  4. Step 4: Simplify right side
    20,382.77x = 414,020,686.42
  5. Step 5: Solve for x
    x = 414,020,686.42/20,382.77
  6. Step 6: Final answer
    x = 20,312.29

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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.