Home / 21,648.40-29,874.66-12,087.74

Finding the Fourth Proportional to 21,648.40, 29,874.66 and 12,087.74

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Solution

The fourth proportional to 21,648.40, 29,874.66 and 12,087.74 is: 16,681.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,648.40 : 29,874.66 = 12,087.74 : x
  2. Step 2: Convert to fraction form
    21,648.40/29,874.66 = 12,087.74/x
  3. Step 3: Cross multiply
    21,648.40x = 29,874.66 × 12,087.74
  4. Step 4: Simplify right side
    21,648.40x = 361,117,122.67
  5. Step 5: Solve for x
    x = 361,117,122.67/21,648.40
  6. Step 6: Final answer
    x = 16,681.01

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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.