Home / 20,659.38-30,988.80-5,077.14

Finding the Fourth Proportional to 20,659.38, 30,988.80 and 5,077.14

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Solution

The fourth proportional to 20,659.38, 30,988.80 and 5,077.14 is: 7,615.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,659.38 : 30,988.80 = 5,077.14 : x
  2. Step 2: Convert to fraction form
    20,659.38/30,988.80 = 5,077.14/x
  3. Step 3: Cross multiply
    20,659.38x = 30,988.80 × 5,077.14
  4. Step 4: Simplify right side
    20,659.38x = 157,334,476.03
  5. Step 5: Solve for x
    x = 157,334,476.03/20,659.38
  6. Step 6: Final answer
    x = 7,615.64

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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.