Home / 20,700.20-31,055.12-5,909.32

Finding the Fourth Proportional to 20,700.20, 31,055.12 and 5,909.32

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Solution

The fourth proportional to 20,700.20, 31,055.12 and 5,909.32 is: 8,865.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,700.20 : 31,055.12 = 5,909.32 : x
  2. Step 2: Convert to fraction form
    20,700.20/31,055.12 = 5,909.32/x
  3. Step 3: Cross multiply
    20,700.20x = 31,055.12 × 5,909.32
  4. Step 4: Simplify right side
    20,700.20x = 183,514,641.72
  5. Step 5: Solve for x
    x = 183,514,641.72/20,700.20
  6. Step 6: Final answer
    x = 8,865.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.