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Finding the Fourth Proportional to 28,484.41, 42,726.71 and 8,762.83

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Solution

The fourth proportional to 28,484.41, 42,726.71 and 8,762.83 is: 13,144.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,484.41 : 42,726.71 = 8,762.83 : x
  2. Step 2: Convert to fraction form
    28,484.41/42,726.71 = 8,762.83/x
  3. Step 3: Cross multiply
    28,484.41x = 42,726.71 × 8,762.83
  4. Step 4: Simplify right side
    28,484.41x = 374,406,704.46
  5. Step 5: Solve for x
    x = 374,406,704.46/28,484.41
  6. Step 6: Final answer
    x = 13,144.27

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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.