Home / 21,392.25-29,534.28-13,953.21

Finding the Fourth Proportional to 21,392.25, 29,534.28 and 13,953.21

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Solution

The fourth proportional to 21,392.25, 29,534.28 and 13,953.21 is: 19,263.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,392.25 : 29,534.28 = 13,953.21 : x
  2. Step 2: Convert to fraction form
    21,392.25/29,534.28 = 13,953.21/x
  3. Step 3: Cross multiply
    21,392.25x = 29,534.28 × 13,953.21
  4. Step 4: Simplify right side
    21,392.25x = 412,098,011.04
  5. Step 5: Solve for x
    x = 412,098,011.04/21,392.25
  6. Step 6: Final answer
    x = 19,263.89

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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.