Home / 20,925.33-31,388.05-5,130.43

Finding the Fourth Proportional to 20,925.33, 31,388.05 and 5,130.43

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Solution

The fourth proportional to 20,925.33, 31,388.05 and 5,130.43 is: 7,695.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,925.33 : 31,388.05 = 5,130.43 : x
  2. Step 2: Convert to fraction form
    20,925.33/31,388.05 = 5,130.43/x
  3. Step 3: Cross multiply
    20,925.33x = 31,388.05 × 5,130.43
  4. Step 4: Simplify right side
    20,925.33x = 161,034,167.71
  5. Step 5: Solve for x
    x = 161,034,167.71/20,925.33
  6. Step 6: Final answer
    x = 7,695.66

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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.