Home / 15,831.48-21,848.56-8,757.74

Finding the Fourth Proportional to 15,831.48, 21,848.56 and 8,757.74

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Solution

The fourth proportional to 15,831.48, 21,848.56 and 8,757.74 is: 12,086.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,831.48 : 21,848.56 = 8,757.74 : x
  2. Step 2: Convert to fraction form
    15,831.48/21,848.56 = 8,757.74/x
  3. Step 3: Cross multiply
    15,831.48x = 21,848.56 × 8,757.74
  4. Step 4: Simplify right side
    15,831.48x = 191,344,007.85
  5. Step 5: Solve for x
    x = 191,344,007.85/15,831.48
  6. Step 6: Final answer
    x = 12,086.30

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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.