Home / 10,729.71-15,974.40-10,677.78

Finding the Fourth Proportional to 10,729.71, 15,974.40 and 10,677.78

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Solution

The fourth proportional to 10,729.71, 15,974.40 and 10,677.78 is: 15,897.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,729.71 : 15,974.40 = 10,677.78 : x
  2. Step 2: Convert to fraction form
    10,729.71/15,974.40 = 10,677.78/x
  3. Step 3: Cross multiply
    10,729.71x = 15,974.40 × 10,677.78
  4. Step 4: Simplify right side
    10,729.71x = 170,571,128.83
  5. Step 5: Solve for x
    x = 170,571,128.83/10,729.71
  6. Step 6: Final answer
    x = 15,897.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.