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Finding the Fourth Proportional to 25,699.60, 38,555.06 and 10,921.15

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Solution

The fourth proportional to 25,699.60, 38,555.06 and 10,921.15 is: 16,384.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,699.60 : 38,555.06 = 10,921.15 : x
  2. Step 2: Convert to fraction form
    25,699.60/38,555.06 = 10,921.15/x
  3. Step 3: Cross multiply
    25,699.60x = 38,555.06 × 10,921.15
  4. Step 4: Simplify right side
    25,699.60x = 421,065,524.43
  5. Step 5: Solve for x
    x = 421,065,524.43/25,699.60
  6. Step 6: Final answer
    x = 16,384.13

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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.