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Finding the Fourth Proportional to 28,891.60, 43,337.40 and 27,287.80

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Solution

The fourth proportional to 28,891.60, 43,337.40 and 27,287.80 is: 40,931.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,891.60 : 43,337.40 = 27,287.80 : x
  2. Step 2: Convert to fraction form
    28,891.60/43,337.40 = 27,287.80/x
  3. Step 3: Cross multiply
    28,891.60x = 43,337.40 × 27,287.80
  4. Step 4: Simplify right side
    28,891.60x = 1,182,582,303.72
  5. Step 5: Solve for x
    x = 1,182,582,303.72/28,891.60
  6. Step 6: Final answer
    x = 40,931.70

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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.