Home / 42,908.28-64,346.22-20,714.28

Finding the Fourth Proportional to 42,908.28, 64,346.22 and 20,714.28

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Solution

The fourth proportional to 42,908.28, 64,346.22 and 20,714.28 is: 31,063.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,908.28 : 64,346.22 = 20,714.28 : x
  2. Step 2: Convert to fraction form
    42,908.28/64,346.22 = 20,714.28/x
  3. Step 3: Cross multiply
    42,908.28x = 64,346.22 × 20,714.28
  4. Step 4: Simplify right side
    42,908.28x = 1,332,885,618.02
  5. Step 5: Solve for x
    x = 1,332,885,618.02/42,908.28
  6. Step 6: Final answer
    x = 31,063.60

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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.