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Finding the Fourth Proportional to 20,373.84, 30,601.08 and 12,385.08

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Solution

The fourth proportional to 20,373.84, 30,601.08 and 12,385.08 is: 18,602.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,373.84 : 30,601.08 = 12,385.08 : x
  2. Step 2: Convert to fraction form
    20,373.84/30,601.08 = 12,385.08/x
  3. Step 3: Cross multiply
    20,373.84x = 30,601.08 × 12,385.08
  4. Step 4: Simplify right side
    20,373.84x = 378,996,823.89
  5. Step 5: Solve for x
    x = 378,996,823.89/20,373.84
  6. Step 6: Final answer
    x = 18,602.13

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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.