Home / 21,301.22-29,396.29-11,870.39

Finding the Fourth Proportional to 21,301.22, 29,396.29 and 11,870.39

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Solution

The fourth proportional to 21,301.22, 29,396.29 and 11,870.39 is: 16,381.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,301.22 : 29,396.29 = 11,870.39 : x
  2. Step 2: Convert to fraction form
    21,301.22/29,396.29 = 11,870.39/x
  3. Step 3: Cross multiply
    21,301.22x = 29,396.29 × 11,870.39
  4. Step 4: Simplify right side
    21,301.22x = 348,945,470.67
  5. Step 5: Solve for x
    x = 348,945,470.67/21,301.22
  6. Step 6: Final answer
    x = 16,381.48

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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.