Home / 10,886.28-15,018.75-7,108.24

Finding the Fourth Proportional to 10,886.28, 15,018.75 and 7,108.24

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Solution

The fourth proportional to 10,886.28, 15,018.75 and 7,108.24 is: 9,806.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,886.28 : 15,018.75 = 7,108.24 : x
  2. Step 2: Convert to fraction form
    10,886.28/15,018.75 = 7,108.24/x
  3. Step 3: Cross multiply
    10,886.28x = 15,018.75 × 7,108.24
  4. Step 4: Simplify right side
    10,886.28x = 106,756,879.50
  5. Step 5: Solve for x
    x = 106,756,879.50/10,886.28
  6. Step 6: Final answer
    x = 9,806.55

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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.