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Finding the Fourth Proportional to 19,718.88, 29,573.80 and 5,678.88

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Solution

The fourth proportional to 19,718.88, 29,573.80 and 5,678.88 is: 8,517.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,718.88 : 29,573.80 = 5,678.88 : x
  2. Step 2: Convert to fraction form
    19,718.88/29,573.80 = 5,678.88/x
  3. Step 3: Cross multiply
    19,718.88x = 29,573.80 × 5,678.88
  4. Step 4: Simplify right side
    19,718.88x = 167,946,061.34
  5. Step 5: Solve for x
    x = 167,946,061.34/19,718.88
  6. Step 6: Final answer
    x = 8,517.02

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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.