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Finding the Fourth Proportional to 42,313.76, 63,479.52 and 12,733.76

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Solution

The fourth proportional to 42,313.76, 63,479.52 and 12,733.76 is: 19,103.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,313.76 : 63,479.52 = 12,733.76 : x
  2. Step 2: Convert to fraction form
    42,313.76/63,479.52 = 12,733.76/x
  3. Step 3: Cross multiply
    42,313.76x = 63,479.52 × 12,733.76
  4. Step 4: Simplify right side
    42,313.76x = 808,332,972.60
  5. Step 5: Solve for x
    x = 808,332,972.60/42,313.76
  6. Step 6: Final answer
    x = 19,103.31

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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.