Home / 20,572.32-28,390.32-12,618.93

Finding the Fourth Proportional to 20,572.32, 28,390.32 and 12,618.93

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Solution

The fourth proportional to 20,572.32, 28,390.32 and 12,618.93 is: 17,414.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,572.32 : 28,390.32 = 12,618.93 : x
  2. Step 2: Convert to fraction form
    20,572.32/28,390.32 = 12,618.93/x
  3. Step 3: Cross multiply
    20,572.32x = 28,390.32 × 12,618.93
  4. Step 4: Simplify right side
    20,572.32x = 358,255,460.76
  5. Step 5: Solve for x
    x = 358,255,460.76/20,572.32
  6. Step 6: Final answer
    x = 17,414.44

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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.