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Finding the Fourth Proportional to 17,715.70, 26,585.70 and 9,818.20

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Solution

The fourth proportional to 17,715.70, 26,585.70 and 9,818.20 is: 14,734.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,715.70 : 26,585.70 = 9,818.20 : x
  2. Step 2: Convert to fraction form
    17,715.70/26,585.70 = 9,818.20/x
  3. Step 3: Cross multiply
    17,715.70x = 26,585.70 × 9,818.20
  4. Step 4: Simplify right side
    17,715.70x = 261,023,719.74
  5. Step 5: Solve for x
    x = 261,023,719.74/17,715.70
  6. Step 6: Final answer
    x = 14,734.03

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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.