Home / 21,008.88-31,502.17-6,215.76

Finding the Fourth Proportional to 21,008.88, 31,502.17 and 6,215.76

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Solution

The fourth proportional to 21,008.88, 31,502.17 and 6,215.76 is: 9,320.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,008.88 : 31,502.17 = 6,215.76 : x
  2. Step 2: Convert to fraction form
    21,008.88/31,502.17 = 6,215.76/x
  3. Step 3: Cross multiply
    21,008.88x = 31,502.17 × 6,215.76
  4. Step 4: Simplify right side
    21,008.88x = 195,809,928.20
  5. Step 5: Solve for x
    x = 195,809,928.20/21,008.88
  6. Step 6: Final answer
    x = 9,320.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.