Home / 20,442.72-28,206.24-14,785.92

Finding the Fourth Proportional to 20,442.72, 28,206.24 and 14,785.92

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Solution

The fourth proportional to 20,442.72, 28,206.24 and 14,785.92 is: 20,401.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,442.72 : 28,206.24 = 14,785.92 : x
  2. Step 2: Convert to fraction form
    20,442.72/28,206.24 = 14,785.92/x
  3. Step 3: Cross multiply
    20,442.72x = 28,206.24 × 14,785.92
  4. Step 4: Simplify right side
    20,442.72x = 417,055,208.14
  5. Step 5: Solve for x
    x = 417,055,208.14/20,442.72
  6. Step 6: Final answer
    x = 20,401.16

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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.