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Finding the Fourth Proportional to 28,483.70, 42,726.23 and 8,762.44

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Solution

The fourth proportional to 28,483.70, 42,726.23 and 8,762.44 is: 13,143.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,483.70 : 42,726.23 = 8,762.44 : x
  2. Step 2: Convert to fraction form
    28,483.70/42,726.23 = 8,762.44/x
  3. Step 3: Cross multiply
    28,483.70x = 42,726.23 × 8,762.44
  4. Step 4: Simplify right side
    28,483.70x = 374,386,026.80
  5. Step 5: Solve for x
    x = 374,386,026.80/28,483.70
  6. Step 6: Final answer
    x = 13,143.87

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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.