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Finding the Fourth Proportional to 28,947.60, 43,437.60 and 12,304.80

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Solution

The fourth proportional to 28,947.60, 43,437.60 and 12,304.80 is: 18,464.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,947.60 : 43,437.60 = 12,304.80 : x
  2. Step 2: Convert to fraction form
    28,947.60/43,437.60 = 12,304.80/x
  3. Step 3: Cross multiply
    28,947.60x = 43,437.60 × 12,304.80
  4. Step 4: Simplify right side
    28,947.60x = 534,490,980.48
  5. Step 5: Solve for x
    x = 534,490,980.48/28,947.60
  6. Step 6: Final answer
    x = 18,464.09

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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.