Home / 25,657.20-38,491.20-7,886.40

Finding the Fourth Proportional to 25,657.20, 38,491.20 and 7,886.40

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Solution

The fourth proportional to 25,657.20, 38,491.20 and 7,886.40 is: 11,831.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,657.20 : 38,491.20 = 7,886.40 : x
  2. Step 2: Convert to fraction form
    25,657.20/38,491.20 = 7,886.40/x
  3. Step 3: Cross multiply
    25,657.20x = 38,491.20 × 7,886.40
  4. Step 4: Simplify right side
    25,657.20x = 303,556,999.68
  5. Step 5: Solve for x
    x = 303,556,999.68/25,657.20
  6. Step 6: Final answer
    x = 11,831.26

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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.