Home / 28,179.28-42,268.44-8,457.52

Finding the Fourth Proportional to 28,179.28, 42,268.44 and 8,457.52

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Solution

The fourth proportional to 28,179.28, 42,268.44 and 8,457.52 is: 12,686.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,179.28 : 42,268.44 = 8,457.52 : x
  2. Step 2: Convert to fraction form
    28,179.28/42,268.44 = 8,457.52/x
  3. Step 3: Cross multiply
    28,179.28x = 42,268.44 × 8,457.52
  4. Step 4: Simplify right side
    28,179.28x = 357,486,176.67
  5. Step 5: Solve for x
    x = 357,486,176.67/28,179.28
  6. Step 6: Final answer
    x = 12,686.14

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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.