Home / 20,077.89-30,114.27-5,287.95

Finding the Fourth Proportional to 20,077.89, 30,114.27 and 5,287.95

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Solution

The fourth proportional to 20,077.89, 30,114.27 and 5,287.95 is: 7,931.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,077.89 : 30,114.27 = 5,287.95 : x
  2. Step 2: Convert to fraction form
    20,077.89/30,114.27 = 5,287.95/x
  3. Step 3: Cross multiply
    20,077.89x = 30,114.27 × 5,287.95
  4. Step 4: Simplify right side
    20,077.89x = 159,242,754.05
  5. Step 5: Solve for x
    x = 159,242,754.05/20,077.89
  6. Step 6: Final answer
    x = 7,931.25

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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.