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Finding the Fourth Proportional to 12,484.64, 18,711.39 and 8,030.45

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Solution

The fourth proportional to 12,484.64, 18,711.39 and 8,030.45 is: 12,035.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,484.64 : 18,711.39 = 8,030.45 : x
  2. Step 2: Convert to fraction form
    12,484.64/18,711.39 = 8,030.45/x
  3. Step 3: Cross multiply
    12,484.64x = 18,711.39 × 8,030.45
  4. Step 4: Simplify right side
    12,484.64x = 150,260,881.83
  5. Step 5: Solve for x
    x = 150,260,881.83/12,484.64
  6. Step 6: Final answer
    x = 12,035.66

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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.