Home / 10,890.06-16,255.16-9,966.66

Finding the Fourth Proportional to 10,890.06, 16,255.16 and 9,966.66

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Solution

The fourth proportional to 10,890.06, 16,255.16 and 9,966.66 is: 14,876.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,890.06 : 16,255.16 = 9,966.66 : x
  2. Step 2: Convert to fraction form
    10,890.06/16,255.16 = 9,966.66/x
  3. Step 3: Cross multiply
    10,890.06x = 16,255.16 × 9,966.66
  4. Step 4: Simplify right side
    10,890.06x = 162,009,603.13
  5. Step 5: Solve for x
    x = 162,009,603.13/10,890.06
  6. Step 6: Final answer
    x = 14,876.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.