Home / 10,957.61-15,120.28-6,709.74

Finding the Fourth Proportional to 10,957.61, 15,120.28 and 6,709.74

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Solution

The fourth proportional to 10,957.61, 15,120.28 and 6,709.74 is: 9,258.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,957.61 : 15,120.28 = 6,709.74 : x
  2. Step 2: Convert to fraction form
    10,957.61/15,120.28 = 6,709.74/x
  3. Step 3: Cross multiply
    10,957.61x = 15,120.28 × 6,709.74
  4. Step 4: Simplify right side
    10,957.61x = 101,453,147.53
  5. Step 5: Solve for x
    x = 101,453,147.53/10,957.61
  6. Step 6: Final answer
    x = 9,258.69

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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.