Home / 20,717.60-31,065.04-8,237.12

Finding the Fourth Proportional to 20,717.60, 31,065.04 and 8,237.12

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Solution

The fourth proportional to 20,717.60, 31,065.04 and 8,237.12 is: 12,351.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,717.60 : 31,065.04 = 8,237.12 : x
  2. Step 2: Convert to fraction form
    20,717.60/31,065.04 = 8,237.12/x
  3. Step 3: Cross multiply
    20,717.60x = 31,065.04 × 8,237.12
  4. Step 4: Simplify right side
    20,717.60x = 255,886,462.28
  5. Step 5: Solve for x
    x = 255,886,462.28/20,717.60
  6. Step 6: Final answer
    x = 12,351.16

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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.