Home / 28,427.12-42,646.96-8,707.20

Finding the Fourth Proportional to 28,427.12, 42,646.96 and 8,707.20

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Solution

The fourth proportional to 28,427.12, 42,646.96 and 8,707.20 is: 13,062.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,427.12 : 42,646.96 = 8,707.20 : x
  2. Step 2: Convert to fraction form
    28,427.12/42,646.96 = 8,707.20/x
  3. Step 3: Cross multiply
    28,427.12x = 42,646.96 × 8,707.20
  4. Step 4: Simplify right side
    28,427.12x = 371,335,610.11
  5. Step 5: Solve for x
    x = 371,335,610.11/28,427.12
  6. Step 6: Final answer
    x = 13,062.72

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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.