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Finding the Fourth Proportional to 19,718.80, 29,545.80 and 18,552.40

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Solution

The fourth proportional to 19,718.80, 29,545.80 and 18,552.40 is: 27,798.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,718.80 : 29,545.80 = 18,552.40 : x
  2. Step 2: Convert to fraction form
    19,718.80/29,545.80 = 18,552.40/x
  3. Step 3: Cross multiply
    19,718.80x = 29,545.80 × 18,552.40
  4. Step 4: Simplify right side
    19,718.80x = 548,145,499.92
  5. Step 5: Solve for x
    x = 548,145,499.92/19,718.80
  6. Step 6: Final answer
    x = 27,798.12

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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.