Home / 20,734.60-31,101.90-7,587.40

Finding the Fourth Proportional to 20,734.60, 31,101.90 and 7,587.40

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Solution

The fourth proportional to 20,734.60, 31,101.90 and 7,587.40 is: 11,381.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,734.60 : 31,101.90 = 7,587.40 : x
  2. Step 2: Convert to fraction form
    20,734.60/31,101.90 = 7,587.40/x
  3. Step 3: Cross multiply
    20,734.60x = 31,101.90 × 7,587.40
  4. Step 4: Simplify right side
    20,734.60x = 235,982,556.06
  5. Step 5: Solve for x
    x = 235,982,556.06/20,734.60
  6. Step 6: Final answer
    x = 11,381.10

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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.