Home / 20,972.23-31,461.59-7,646.35

Finding the Fourth Proportional to 20,972.23, 31,461.59 and 7,646.35

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Solution

The fourth proportional to 20,972.23, 31,461.59 and 7,646.35 is: 11,470.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,972.23 : 31,461.59 = 7,646.35 : x
  2. Step 2: Convert to fraction form
    20,972.23/31,461.59 = 7,646.35/x
  3. Step 3: Cross multiply
    20,972.23x = 31,461.59 × 7,646.35
  4. Step 4: Simplify right side
    20,972.23x = 240,566,290.46
  5. Step 5: Solve for x
    x = 240,566,290.46/20,972.23
  6. Step 6: Final answer
    x = 11,470.71

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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.