Home / 21,373.28-29,464.80-18,867.68

Finding the Fourth Proportional to 21,373.28, 29,464.80 and 18,867.68

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Solution

The fourth proportional to 21,373.28, 29,464.80 and 18,867.68 is: 26,010.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,373.28 : 29,464.80 = 18,867.68 : x
  2. Step 2: Convert to fraction form
    21,373.28/29,464.80 = 18,867.68/x
  3. Step 3: Cross multiply
    21,373.28x = 29,464.80 × 18,867.68
  4. Step 4: Simplify right side
    21,373.28x = 555,932,417.66
  5. Step 5: Solve for x
    x = 555,932,417.66/21,373.28
  6. Step 6: Final answer
    x = 26,010.63

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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.