Home / 21,648.35-29,874.43-12,088.40

Finding the Fourth Proportional to 21,648.35, 29,874.43 and 12,088.40

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Solution

The fourth proportional to 21,648.35, 29,874.43 and 12,088.40 is: 16,681.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,648.35 : 29,874.43 = 12,088.40 : x
  2. Step 2: Convert to fraction form
    21,648.35/29,874.43 = 12,088.40/x
  3. Step 3: Cross multiply
    21,648.35x = 29,874.43 × 12,088.40
  4. Step 4: Simplify right side
    21,648.35x = 361,133,849.80
  5. Step 5: Solve for x
    x = 361,133,849.80/21,648.35
  6. Step 6: Final answer
    x = 16,681.82

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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.