Home / 21,070.62-29,076.89-11,638.98

Finding the Fourth Proportional to 21,070.62, 29,076.89 and 11,638.98

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Solution

The fourth proportional to 21,070.62, 29,076.89 and 11,638.98 is: 16,061.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,070.62 : 29,076.89 = 11,638.98 : x
  2. Step 2: Convert to fraction form
    21,070.62/29,076.89 = 11,638.98/x
  3. Step 3: Cross multiply
    21,070.62x = 29,076.89 × 11,638.98
  4. Step 4: Simplify right side
    21,070.62x = 338,425,341.17
  5. Step 5: Solve for x
    x = 338,425,341.17/21,070.62
  6. Step 6: Final answer
    x = 16,061.48

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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.