Home / 21,586.90-29,789.80-12,027.20

Finding the Fourth Proportional to 21,586.90, 29,789.80 and 12,027.20

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Solution

The fourth proportional to 21,586.90, 29,789.80 and 12,027.20 is: 16,597.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,586.90 : 29,789.80 = 12,027.20 : x
  2. Step 2: Convert to fraction form
    21,586.90/29,789.80 = 12,027.20/x
  3. Step 3: Cross multiply
    21,586.90x = 29,789.80 × 12,027.20
  4. Step 4: Simplify right side
    21,586.90x = 358,287,926.97
  5. Step 5: Solve for x
    x = 358,287,926.97/21,586.90
  6. Step 6: Final answer
    x = 16,597.47

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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.