Home / 28,445.12-42,673.92-8,725.16

Finding the Fourth Proportional to 28,445.12, 42,673.92 and 8,725.16

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Solution

The fourth proportional to 28,445.12, 42,673.92 and 8,725.16 is: 13,089.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,445.12 : 42,673.92 = 8,725.16 : x
  2. Step 2: Convert to fraction form
    28,445.12/42,673.92 = 8,725.16/x
  3. Step 3: Cross multiply
    28,445.12x = 42,673.92 × 8,725.16
  4. Step 4: Simplify right side
    28,445.12x = 372,336,779.83
  5. Step 5: Solve for x
    x = 372,336,779.83/28,445.12
  6. Step 6: Final answer
    x = 13,089.65

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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.