Home / 20,966.76-28,927.05-14,240.73

Finding the Fourth Proportional to 20,966.76, 28,927.05 and 14,240.73

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Solution

The fourth proportional to 20,966.76, 28,927.05 and 14,240.73 is: 19,647.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,966.76 : 28,927.05 = 14,240.73 : x
  2. Step 2: Convert to fraction form
    20,966.76/28,927.05 = 14,240.73/x
  3. Step 3: Cross multiply
    20,966.76x = 28,927.05 × 14,240.73
  4. Step 4: Simplify right side
    20,966.76x = 411,942,308.75
  5. Step 5: Solve for x
    x = 411,942,308.75/20,966.76
  6. Step 6: Final answer
    x = 19,647.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.