Home / 19,787.78-29,681.60-8,101.02

Finding the Fourth Proportional to 19,787.78, 29,681.60 and 8,101.02

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Solution

The fourth proportional to 19,787.78, 29,681.60 and 8,101.02 is: 12,151.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,787.78 : 29,681.60 = 8,101.02 : x
  2. Step 2: Convert to fraction form
    19,787.78/29,681.60 = 8,101.02/x
  3. Step 3: Cross multiply
    19,787.78x = 29,681.60 × 8,101.02
  4. Step 4: Simplify right side
    19,787.78x = 240,451,235.23
  5. Step 5: Solve for x
    x = 240,451,235.23/19,787.78
  6. Step 6: Final answer
    x = 12,151.50

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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.