Home / 21,070.15-29,076.82-11,510.17

Finding the Fourth Proportional to 21,070.15, 29,076.82 and 11,510.17

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Solution

The fourth proportional to 21,070.15, 29,076.82 and 11,510.17 is: 15,884.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,070.15 : 29,076.82 = 11,510.17 : x
  2. Step 2: Convert to fraction form
    21,070.15/29,076.82 = 11,510.17/x
  3. Step 3: Cross multiply
    21,070.15x = 29,076.82 × 11,510.17
  4. Step 4: Simplify right side
    21,070.15x = 334,679,039.79
  5. Step 5: Solve for x
    x = 334,679,039.79/21,070.15
  6. Step 6: Final answer
    x = 15,884.04

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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.