Home / 21,016.01-31,502.73-13,625.15

Finding the Fourth Proportional to 21,016.01, 31,502.73 and 13,625.15

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Solution

The fourth proportional to 21,016.01, 31,502.73 and 13,625.15 is: 20,423.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,016.01 : 31,502.73 = 13,625.15 : x
  2. Step 2: Convert to fraction form
    21,016.01/31,502.73 = 13,625.15/x
  3. Step 3: Cross multiply
    21,016.01x = 31,502.73 × 13,625.15
  4. Step 4: Simplify right side
    21,016.01x = 429,229,421.66
  5. Step 5: Solve for x
    x = 429,229,421.66/21,016.01
  6. Step 6: Final answer
    x = 20,423.93

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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.