Home / 25,809.12-38,721.04-12,665.44

Finding the Fourth Proportional to 25,809.12, 38,721.04 and 12,665.44

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Solution

The fourth proportional to 25,809.12, 38,721.04 and 12,665.44 is: 19,001.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,809.12 : 38,721.04 = 12,665.44 : x
  2. Step 2: Convert to fraction form
    25,809.12/38,721.04 = 12,665.44/x
  3. Step 3: Cross multiply
    25,809.12x = 38,721.04 × 12,665.44
  4. Step 4: Simplify right side
    25,809.12x = 490,419,008.86
  5. Step 5: Solve for x
    x = 490,419,008.86/25,809.12
  6. Step 6: Final answer
    x = 19,001.77

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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.