Home / 28,177.12-42,263.16-8,460.08

Finding the Fourth Proportional to 28,177.12, 42,263.16 and 8,460.08

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Solution

The fourth proportional to 28,177.12, 42,263.16 and 8,460.08 is: 12,689.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,177.12 : 42,263.16 = 8,460.08 : x
  2. Step 2: Convert to fraction form
    28,177.12/42,263.16 = 8,460.08/x
  3. Step 3: Cross multiply
    28,177.12x = 42,263.16 × 8,460.08
  4. Step 4: Simplify right side
    28,177.12x = 357,549,714.65
  5. Step 5: Solve for x
    x = 357,549,714.65/28,177.12
  6. Step 6: Final answer
    x = 12,689.36

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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.