Home / 20,700.72-31,041.56-6,658.16

Finding the Fourth Proportional to 20,700.72, 31,041.56 and 6,658.16

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Solution

The fourth proportional to 20,700.72, 31,041.56 and 6,658.16 is: 9,984.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,700.72 : 31,041.56 = 6,658.16 : x
  2. Step 2: Convert to fraction form
    20,700.72/31,041.56 = 6,658.16/x
  3. Step 3: Cross multiply
    20,700.72x = 31,041.56 × 6,658.16
  4. Step 4: Simplify right side
    20,700.72x = 206,679,673.13
  5. Step 5: Solve for x
    x = 206,679,673.13/20,700.72
  6. Step 6: Final answer
    x = 9,984.18

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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.