Home / 20,281.56-30,435.90-7,133.88

Finding the Fourth Proportional to 20,281.56, 30,435.90 and 7,133.88

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Solution

The fourth proportional to 20,281.56, 30,435.90 and 7,133.88 is: 10,705.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,281.56 : 30,435.90 = 7,133.88 : x
  2. Step 2: Convert to fraction form
    20,281.56/30,435.90 = 7,133.88/x
  3. Step 3: Cross multiply
    20,281.56x = 30,435.90 × 7,133.88
  4. Step 4: Simplify right side
    20,281.56x = 217,126,058.29
  5. Step 5: Solve for x
    x = 217,126,058.29/20,281.56
  6. Step 6: Final answer
    x = 10,705.59

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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.