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Finding the Fourth Proportional to 14,908.58, 20,575.78 and 9,618.78

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Solution

The fourth proportional to 14,908.58, 20,575.78 and 9,618.78 is: 13,275.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,908.58 : 20,575.78 = 9,618.78 : x
  2. Step 2: Convert to fraction form
    14,908.58/20,575.78 = 9,618.78/x
  3. Step 3: Cross multiply
    14,908.58x = 20,575.78 × 9,618.78
  4. Step 4: Simplify right side
    14,908.58x = 197,913,901.15
  5. Step 5: Solve for x
    x = 197,913,901.15/14,908.58
  6. Step 6: Final answer
    x = 13,275.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.