Home / 12,887.64-19,330.80-7,553.78

Finding the Fourth Proportional to 12,887.64, 19,330.80 and 7,553.78

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Solution

The fourth proportional to 12,887.64, 19,330.80 and 7,553.78 is: 11,330.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,887.64 : 19,330.80 = 7,553.78 : x
  2. Step 2: Convert to fraction form
    12,887.64/19,330.80 = 7,553.78/x
  3. Step 3: Cross multiply
    12,887.64x = 19,330.80 × 7,553.78
  4. Step 4: Simplify right side
    12,887.64x = 146,020,610.42
  5. Step 5: Solve for x
    x = 146,020,610.42/12,887.64
  6. Step 6: Final answer
    x = 11,330.28

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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.