Home / 15,036.89-20,752.45-8,663.74

Finding the Fourth Proportional to 15,036.89, 20,752.45 and 8,663.74

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Solution

The fourth proportional to 15,036.89, 20,752.45 and 8,663.74 is: 11,956.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,036.89 : 20,752.45 = 8,663.74 : x
  2. Step 2: Convert to fraction form
    15,036.89/20,752.45 = 8,663.74/x
  3. Step 3: Cross multiply
    15,036.89x = 20,752.45 × 8,663.74
  4. Step 4: Simplify right side
    15,036.89x = 179,793,831.16
  5. Step 5: Solve for x
    x = 179,793,831.16/15,036.89
  6. Step 6: Final answer
    x = 11,956.85

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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.