Home / 21,459.84-29,609.02-12,955.24

Finding the Fourth Proportional to 21,459.84, 29,609.02 and 12,955.24

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Solution

The fourth proportional to 21,459.84, 29,609.02 and 12,955.24 is: 17,874.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,459.84 : 29,609.02 = 12,955.24 : x
  2. Step 2: Convert to fraction form
    21,459.84/29,609.02 = 12,955.24/x
  3. Step 3: Cross multiply
    21,459.84x = 29,609.02 × 12,955.24
  4. Step 4: Simplify right side
    21,459.84x = 383,591,960.26
  5. Step 5: Solve for x
    x = 383,591,960.26/21,459.84
  6. Step 6: Final answer
    x = 17,874.88

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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.