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Finding the Fourth Proportional to 19,652.40, 29,482.20 and 7,966.80

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Solution

The fourth proportional to 19,652.40, 29,482.20 and 7,966.80 is: 11,951.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,652.40 : 29,482.20 = 7,966.80 : x
  2. Step 2: Convert to fraction form
    19,652.40/29,482.20 = 7,966.80/x
  3. Step 3: Cross multiply
    19,652.40x = 29,482.20 × 7,966.80
  4. Step 4: Simplify right side
    19,652.40x = 234,878,790.96
  5. Step 5: Solve for x
    x = 234,878,790.96/19,652.40
  6. Step 6: Final answer
    x = 11,951.66

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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.