Home / 10,890.80-15,028.76-6,110.16

Finding the Fourth Proportional to 10,890.80, 15,028.76 and 6,110.16

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Solution

The fourth proportional to 10,890.80, 15,028.76 and 6,110.16 is: 8,431.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,890.80 : 15,028.76 = 6,110.16 : x
  2. Step 2: Convert to fraction form
    10,890.80/15,028.76 = 6,110.16/x
  3. Step 3: Cross multiply
    10,890.80x = 15,028.76 × 6,110.16
  4. Step 4: Simplify right side
    10,890.80x = 91,828,128.20
  5. Step 5: Solve for x
    x = 91,828,128.20/10,890.80
  6. Step 6: Final answer
    x = 8,431.72

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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.