Home / 21,294.36-29,385.54-13,340.88

Finding the Fourth Proportional to 21,294.36, 29,385.54 and 13,340.88

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Solution

The fourth proportional to 21,294.36, 29,385.54 and 13,340.88 is: 18,409.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,294.36 : 29,385.54 = 13,340.88 : x
  2. Step 2: Convert to fraction form
    21,294.36/29,385.54 = 13,340.88/x
  3. Step 3: Cross multiply
    21,294.36x = 29,385.54 × 13,340.88
  4. Step 4: Simplify right side
    21,294.36x = 392,028,962.88
  5. Step 5: Solve for x
    x = 392,028,962.88/21,294.36
  6. Step 6: Final answer
    x = 18,409.99

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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.