Home / 21,854.25-30,158.87-12,423.42

Finding the Fourth Proportional to 21,854.25, 30,158.87 and 12,423.42

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Solution

The fourth proportional to 21,854.25, 30,158.87 and 12,423.42 is: 17,144.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,854.25 : 30,158.87 = 12,423.42 : x
  2. Step 2: Convert to fraction form
    21,854.25/30,158.87 = 12,423.42/x
  3. Step 3: Cross multiply
    21,854.25x = 30,158.87 × 12,423.42
  4. Step 4: Simplify right side
    21,854.25x = 374,676,246.62
  5. Step 5: Solve for x
    x = 374,676,246.62/21,854.25
  6. Step 6: Final answer
    x = 17,144.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.