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Finding the Fourth Proportional to 25,484.40, 38,168.40 and 12,166.76

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Solution

The fourth proportional to 25,484.40, 38,168.40 and 12,166.76 is: 18,222.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,484.40 : 38,168.40 = 12,166.76 : x
  2. Step 2: Convert to fraction form
    25,484.40/38,168.40 = 12,166.76/x
  3. Step 3: Cross multiply
    25,484.40x = 38,168.40 × 12,166.76
  4. Step 4: Simplify right side
    25,484.40x = 464,385,701.55
  5. Step 5: Solve for x
    x = 464,385,701.55/25,484.40
  6. Step 6: Final answer
    x = 18,222.36

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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.