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Finding the Fourth Proportional to 28,909.80, 43,291.80 and 23,077.80

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Solution

The fourth proportional to 28,909.80, 43,291.80 and 23,077.80 is: 34,558.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,909.80 : 43,291.80 = 23,077.80 : x
  2. Step 2: Convert to fraction form
    28,909.80/43,291.80 = 23,077.80/x
  3. Step 3: Cross multiply
    28,909.80x = 43,291.80 × 23,077.80
  4. Step 4: Simplify right side
    28,909.80x = 999,079,502.04
  5. Step 5: Solve for x
    x = 999,079,502.04/28,909.80
  6. Step 6: Final answer
    x = 34,558.51

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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.