Home / 20,088.64-30,121.92-15,955.12

Finding the Fourth Proportional to 20,088.64, 30,121.92 and 15,955.12

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Solution

The fourth proportional to 20,088.64, 30,121.92 and 15,955.12 is: 23,923.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,088.64 : 30,121.92 = 15,955.12 : x
  2. Step 2: Convert to fraction form
    20,088.64/30,121.92 = 15,955.12/x
  3. Step 3: Cross multiply
    20,088.64x = 30,121.92 × 15,955.12
  4. Step 4: Simplify right side
    20,088.64x = 480,598,848.23
  5. Step 5: Solve for x
    x = 480,598,848.23/20,088.64
  6. Step 6: Final answer
    x = 23,923.91

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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.