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Finding the Fourth Proportional to 25,809.70, 38,714.55 and 8,281.30

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Solution

The fourth proportional to 25,809.70, 38,714.55 and 8,281.30 is: 12,421.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,809.70 : 38,714.55 = 8,281.30 : x
  2. Step 2: Convert to fraction form
    25,809.70/38,714.55 = 8,281.30/x
  3. Step 3: Cross multiply
    25,809.70x = 38,714.55 × 8,281.30
  4. Step 4: Simplify right side
    25,809.70x = 320,606,802.92
  5. Step 5: Solve for x
    x = 320,606,802.92/25,809.70
  6. Step 6: Final answer
    x = 12,421.95

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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.