Home / 20,701.72-31,043.04-6,659.16

Finding the Fourth Proportional to 20,701.72, 31,043.04 and 6,659.16

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Solution

The fourth proportional to 20,701.72, 31,043.04 and 6,659.16 is: 9,985.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,701.72 : 31,043.04 = 6,659.16 : x
  2. Step 2: Convert to fraction form
    20,701.72/31,043.04 = 6,659.16/x
  3. Step 3: Cross multiply
    20,701.72x = 31,043.04 × 6,659.16
  4. Step 4: Simplify right side
    20,701.72x = 206,720,570.25
  5. Step 5: Solve for x
    x = 206,720,570.25/20,701.72
  6. Step 6: Final answer
    x = 9,985.67

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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.