Home / 28,178.12-42,261.06-8,451.38

Finding the Fourth Proportional to 28,178.12, 42,261.06 and 8,451.38

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Solution

The fourth proportional to 28,178.12, 42,261.06 and 8,451.38 is: 12,675.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,178.12 : 42,261.06 = 8,451.38 : x
  2. Step 2: Convert to fraction form
    28,178.12/42,261.06 = 8,451.38/x
  3. Step 3: Cross multiply
    28,178.12x = 42,261.06 × 8,451.38
  4. Step 4: Simplify right side
    28,178.12x = 357,164,277.26
  5. Step 5: Solve for x
    x = 357,164,277.26/28,178.12
  6. Step 6: Final answer
    x = 12,675.23

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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.