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Finding the Fourth Proportional to 28,885.69, 43,332.90 and 12,245.80

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Solution

The fourth proportional to 28,885.69, 43,332.90 and 12,245.80 is: 18,370.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,885.69 : 43,332.90 = 12,245.80 : x
  2. Step 2: Convert to fraction form
    28,885.69/43,332.90 = 12,245.80/x
  3. Step 3: Cross multiply
    28,885.69x = 43,332.90 × 12,245.80
  4. Step 4: Simplify right side
    28,885.69x = 530,646,026.82
  5. Step 5: Solve for x
    x = 530,646,026.82/28,885.69
  6. Step 6: Final answer
    x = 18,370.55

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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.