Home / 20,924.38-31,307.88-12,459.82

Finding the Fourth Proportional to 20,924.38, 31,307.88 and 12,459.82

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Solution

The fourth proportional to 20,924.38, 31,307.88 and 12,459.82 is: 18,642.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,924.38 : 31,307.88 = 12,459.82 : x
  2. Step 2: Convert to fraction form
    20,924.38/31,307.88 = 12,459.82/x
  3. Step 3: Cross multiply
    20,924.38x = 31,307.88 × 12,459.82
  4. Step 4: Simplify right side
    20,924.38x = 390,090,549.38
  5. Step 5: Solve for x
    x = 390,090,549.38/20,924.38
  6. Step 6: Final answer
    x = 18,642.87

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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.