Home / 28,243.15-42,363.63-8,521.18

Finding the Fourth Proportional to 28,243.15, 42,363.63 and 8,521.18

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Solution

The fourth proportional to 28,243.15, 42,363.63 and 8,521.18 is: 12,781.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,243.15 : 42,363.63 = 8,521.18 : x
  2. Step 2: Convert to fraction form
    28,243.15/42,363.63 = 8,521.18/x
  3. Step 3: Cross multiply
    28,243.15x = 42,363.63 × 8,521.18
  4. Step 4: Simplify right side
    28,243.15x = 360,988,010.77
  5. Step 5: Solve for x
    x = 360,988,010.77/28,243.15
  6. Step 6: Final answer
    x = 12,781.44

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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.