Home / 20,742.60-31,113.90-7,596.30

Finding the Fourth Proportional to 20,742.60, 31,113.90 and 7,596.30

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Solution

The fourth proportional to 20,742.60, 31,113.90 and 7,596.30 is: 11,394.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,742.60 : 31,113.90 = 7,596.30 : x
  2. Step 2: Convert to fraction form
    20,742.60/31,113.90 = 7,596.30/x
  3. Step 3: Cross multiply
    20,742.60x = 31,113.90 × 7,596.30
  4. Step 4: Simplify right side
    20,742.60x = 236,350,518.57
  5. Step 5: Solve for x
    x = 236,350,518.57/20,742.60
  6. Step 6: Final answer
    x = 11,394.45

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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.