Home / 21,411.24-29,549.70-13,459.56

Finding the Fourth Proportional to 21,411.24, 29,549.70 and 13,459.56

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Solution

The fourth proportional to 21,411.24, 29,549.70 and 13,459.56 is: 18,575.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,411.24 : 29,549.70 = 13,459.56 : x
  2. Step 2: Convert to fraction form
    21,411.24/29,549.70 = 13,459.56/x
  3. Step 3: Cross multiply
    21,411.24x = 29,549.70 × 13,459.56
  4. Step 4: Simplify right side
    21,411.24x = 397,725,960.13
  5. Step 5: Solve for x
    x = 397,725,960.13/21,411.24
  6. Step 6: Final answer
    x = 18,575.57

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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.