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Finding the Fourth Proportional to 18,360.66, 25,337.78 and 9,977.16

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Solution

The fourth proportional to 18,360.66, 25,337.78 and 9,977.16 is: 13,768.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,360.66 : 25,337.78 = 9,977.16 : x
  2. Step 2: Convert to fraction form
    18,360.66/25,337.78 = 9,977.16/x
  3. Step 3: Cross multiply
    18,360.66x = 25,337.78 × 9,977.16
  4. Step 4: Simplify right side
    18,360.66x = 252,799,035.22
  5. Step 5: Solve for x
    x = 252,799,035.22/18,360.66
  6. Step 6: Final answer
    x = 13,768.52

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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.