Home / 28,437.12-42,652.80-7,662.72

Finding the Fourth Proportional to 28,437.12, 42,652.80 and 7,662.72

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Solution

The fourth proportional to 28,437.12, 42,652.80 and 7,662.72 is: 11,493.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,437.12 : 42,652.80 = 7,662.72 : x
  2. Step 2: Convert to fraction form
    28,437.12/42,652.80 = 7,662.72/x
  3. Step 3: Cross multiply
    28,437.12x = 42,652.80 × 7,662.72
  4. Step 4: Simplify right side
    28,437.12x = 326,836,463.62
  5. Step 5: Solve for x
    x = 326,836,463.62/28,437.12
  6. Step 6: Final answer
    x = 11,493.30

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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.