Home / 11,031.06-15,216.75-6,990.47

Finding the Fourth Proportional to 11,031.06, 15,216.75 and 6,990.47

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Solution

The fourth proportional to 11,031.06, 15,216.75 and 6,990.47 is: 9,642.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,031.06 : 15,216.75 = 6,990.47 : x
  2. Step 2: Convert to fraction form
    11,031.06/15,216.75 = 6,990.47/x
  3. Step 3: Cross multiply
    11,031.06x = 15,216.75 × 6,990.47
  4. Step 4: Simplify right side
    11,031.06x = 106,372,158.29
  5. Step 5: Solve for x
    x = 106,372,158.29/11,031.06
  6. Step 6: Final answer
    x = 9,642.97

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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.