Home / 20,627.51-30,930.80-10,081.76

Finding the Fourth Proportional to 20,627.51, 30,930.80 and 10,081.76

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Solution

The fourth proportional to 20,627.51, 30,930.80 and 10,081.76 is: 15,117.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,627.51 : 30,930.80 = 10,081.76 : x
  2. Step 2: Convert to fraction form
    20,627.51/30,930.80 = 10,081.76/x
  3. Step 3: Cross multiply
    20,627.51x = 30,930.80 × 10,081.76
  4. Step 4: Simplify right side
    20,627.51x = 311,836,697.15
  5. Step 5: Solve for x
    x = 311,836,697.15/20,627.51
  6. Step 6: Final answer
    x = 15,117.52

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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.