Home / 21,314.75-29,415.15-11,885.13

Finding the Fourth Proportional to 21,314.75, 29,415.15 and 11,885.13

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Solution

The fourth proportional to 21,314.75, 29,415.15 and 11,885.13 is: 16,401.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,314.75 : 29,415.15 = 11,885.13 : x
  2. Step 2: Convert to fraction form
    21,314.75/29,415.15 = 11,885.13/x
  3. Step 3: Cross multiply
    21,314.75x = 29,415.15 × 11,885.13
  4. Step 4: Simplify right side
    21,314.75x = 349,602,881.72
  5. Step 5: Solve for x
    x = 349,602,881.72/21,314.75
  6. Step 6: Final answer
    x = 16,401.93

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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.