Home / 10,071.20-15,109.40-3,831.32

Finding the Fourth Proportional to 10,071.20, 15,109.40 and 3,831.32

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Solution

The fourth proportional to 10,071.20, 15,109.40 and 3,831.32 is: 5,747.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,071.20 : 15,109.40 = 3,831.32 : x
  2. Step 2: Convert to fraction form
    10,071.20/15,109.40 = 3,831.32/x
  3. Step 3: Cross multiply
    10,071.20x = 15,109.40 × 3,831.32
  4. Step 4: Simplify right side
    10,071.20x = 57,888,946.41
  5. Step 5: Solve for x
    x = 57,888,946.41/10,071.20
  6. Step 6: Final answer
    x = 5,747.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.