Home / 11,862.66-16,351.64-9,340.78

Finding the Fourth Proportional to 11,862.66, 16,351.64 and 9,340.78

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Solution

The fourth proportional to 11,862.66, 16,351.64 and 9,340.78 is: 12,875.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,862.66 : 16,351.64 = 9,340.78 : x
  2. Step 2: Convert to fraction form
    11,862.66/16,351.64 = 9,340.78/x
  3. Step 3: Cross multiply
    11,862.66x = 16,351.64 × 9,340.78
  4. Step 4: Simplify right side
    11,862.66x = 152,737,071.88
  5. Step 5: Solve for x
    x = 152,737,071.88/11,862.66
  6. Step 6: Final answer
    x = 12,875.45

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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.