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Finding the Fourth Proportional to 30,363.80, 45,545.70 and 19,234.40

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Solution

The fourth proportional to 30,363.80, 45,545.70 and 19,234.40 is: 28,851.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,363.80 : 45,545.70 = 19,234.40 : x
  2. Step 2: Convert to fraction form
    30,363.80/45,545.70 = 19,234.40/x
  3. Step 3: Cross multiply
    30,363.80x = 45,545.70 × 19,234.40
  4. Step 4: Simplify right side
    30,363.80x = 876,044,212.08
  5. Step 5: Solve for x
    x = 876,044,212.08/30,363.80
  6. Step 6: Final answer
    x = 28,851.60

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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.