Home / 21,084.78-29,095.86-11,652.78

Finding the Fourth Proportional to 21,084.78, 29,095.86 and 11,652.78

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Solution

The fourth proportional to 21,084.78, 29,095.86 and 11,652.78 is: 16,080.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,084.78 : 29,095.86 = 11,652.78 : x
  2. Step 2: Convert to fraction form
    21,084.78/29,095.86 = 11,652.78/x
  3. Step 3: Cross multiply
    21,084.78x = 29,095.86 × 11,652.78
  4. Step 4: Simplify right side
    21,084.78x = 339,047,655.49
  5. Step 5: Solve for x
    x = 339,047,655.49/21,084.78
  6. Step 6: Final answer
    x = 16,080.21

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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.