Home / 11,071.35-15,275.18-7,085.54

Finding the Fourth Proportional to 11,071.35, 15,275.18 and 7,085.54

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Solution

The fourth proportional to 11,071.35, 15,275.18 and 7,085.54 is: 9,775.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,071.35 : 15,275.18 = 7,085.54 : x
  2. Step 2: Convert to fraction form
    11,071.35/15,275.18 = 7,085.54/x
  3. Step 3: Cross multiply
    11,071.35x = 15,275.18 × 7,085.54
  4. Step 4: Simplify right side
    11,071.35x = 108,232,954.80
  5. Step 5: Solve for x
    x = 108,232,954.80/11,071.35
  6. Step 6: Final answer
    x = 9,775.95

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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.