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Finding the Fourth Proportional to 18,385.96, 25,354.98 and 12,349.84

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Solution

The fourth proportional to 18,385.96, 25,354.98 and 12,349.84 is: 17,030.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,385.96 : 25,354.98 = 12,349.84 : x
  2. Step 2: Convert to fraction form
    18,385.96/25,354.98 = 12,349.84/x
  3. Step 3: Cross multiply
    18,385.96x = 25,354.98 × 12,349.84
  4. Step 4: Simplify right side
    18,385.96x = 313,129,946.20
  5. Step 5: Solve for x
    x = 313,129,946.20/18,385.96
  6. Step 6: Final answer
    x = 17,030.93

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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.