Home / 20,588.32-28,448.40-16,124.32

Finding the Fourth Proportional to 20,588.32, 28,448.40 and 16,124.32

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Solution

The fourth proportional to 20,588.32, 28,448.40 and 16,124.32 is: 22,280.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,588.32 : 28,448.40 = 16,124.32 : x
  2. Step 2: Convert to fraction form
    20,588.32/28,448.40 = 16,124.32/x
  3. Step 3: Cross multiply
    20,588.32x = 28,448.40 × 16,124.32
  4. Step 4: Simplify right side
    20,588.32x = 458,711,105.09
  5. Step 5: Solve for x
    x = 458,711,105.09/20,588.32
  6. Step 6: Final answer
    x = 22,280.16

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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.