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Finding the Fourth Proportional to 12,887.76, 19,332.76 and 3,653.76

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Solution

The fourth proportional to 12,887.76, 19,332.76 and 3,653.76 is: 5,480.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,887.76 : 19,332.76 = 3,653.76 : x
  2. Step 2: Convert to fraction form
    12,887.76/19,332.76 = 3,653.76/x
  3. Step 3: Cross multiply
    12,887.76x = 19,332.76 × 3,653.76
  4. Step 4: Simplify right side
    12,887.76x = 70,637,265.18
  5. Step 5: Solve for x
    x = 70,637,265.18/12,887.76
  6. Step 6: Final answer
    x = 5,480.96

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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.