Home / 21,519.54-29,697.12-12,567.42

Finding the Fourth Proportional to 21,519.54, 29,697.12 and 12,567.42

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Solution

The fourth proportional to 21,519.54, 29,697.12 and 12,567.42 is: 17,343.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,519.54 : 29,697.12 = 12,567.42 : x
  2. Step 2: Convert to fraction form
    21,519.54/29,697.12 = 12,567.42/x
  3. Step 3: Cross multiply
    21,519.54x = 29,697.12 × 12,567.42
  4. Step 4: Simplify right side
    21,519.54x = 373,216,179.83
  5. Step 5: Solve for x
    x = 373,216,179.83/21,519.54
  6. Step 6: Final answer
    x = 17,343.13

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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.