Home / 11,862.05-16,372.13-9,870.66

Finding the Fourth Proportional to 11,862.05, 16,372.13 and 9,870.66

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Solution

The fourth proportional to 11,862.05, 16,372.13 and 9,870.66 is: 13,623.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,862.05 : 16,372.13 = 9,870.66 : x
  2. Step 2: Convert to fraction form
    11,862.05/16,372.13 = 9,870.66/x
  3. Step 3: Cross multiply
    11,862.05x = 16,372.13 × 9,870.66
  4. Step 4: Simplify right side
    11,862.05x = 161,603,679.35
  5. Step 5: Solve for x
    x = 161,603,679.35/11,862.05
  6. Step 6: Final answer
    x = 13,623.59

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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.