Home / 20,068.68-30,100.64-5,278.76

Finding the Fourth Proportional to 20,068.68, 30,100.64 and 5,278.76

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Solution

The fourth proportional to 20,068.68, 30,100.64 and 5,278.76 is: 7,917.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,068.68 : 30,100.64 = 5,278.76 : x
  2. Step 2: Convert to fraction form
    20,068.68/30,100.64 = 5,278.76/x
  3. Step 3: Cross multiply
    20,068.68x = 30,100.64 × 5,278.76
  4. Step 4: Simplify right side
    20,068.68x = 158,893,877.51
  5. Step 5: Solve for x
    x = 158,893,877.51/20,068.68
  6. Step 6: Final answer
    x = 7,917.51

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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.