Home / 21,254.50-29,208.09-20,278.86

Finding the Fourth Proportional to 21,254.50, 29,208.09 and 20,278.86

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Solution

The fourth proportional to 21,254.50, 29,208.09 and 20,278.86 is: 27,867.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,254.50 : 29,208.09 = 20,278.86 : x
  2. Step 2: Convert to fraction form
    21,254.50/29,208.09 = 20,278.86/x
  3. Step 3: Cross multiply
    21,254.50x = 29,208.09 × 20,278.86
  4. Step 4: Simplify right side
    21,254.50x = 592,306,734.49
  5. Step 5: Solve for x
    x = 592,306,734.49/21,254.50
  6. Step 6: Final answer
    x = 27,867.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.