Home / 11,587.09-15,990.10-6,281.87

Finding the Fourth Proportional to 11,587.09, 15,990.10 and 6,281.87

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Solution

The fourth proportional to 11,587.09, 15,990.10 and 6,281.87 is: 8,668.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,587.09 : 15,990.10 = 6,281.87 : x
  2. Step 2: Convert to fraction form
    11,587.09/15,990.10 = 6,281.87/x
  3. Step 3: Cross multiply
    11,587.09x = 15,990.10 × 6,281.87
  4. Step 4: Simplify right side
    11,587.09x = 100,447,729.49
  5. Step 5: Solve for x
    x = 100,447,729.49/11,587.09
  6. Step 6: Final answer
    x = 8,668.93

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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.