Home / 28,720,301.64-39,634,016.31-15,667,613.22

Finding the Fourth Proportional to 28,720,301.64, 39,634,016.31 and 15,667,613.22

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Solution

The fourth proportional to 28,720,301.64, 39,634,016.31 and 15,667,613.22 is: 21,621,306.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,720,301.64 : 39,634,016.31 = 15,667,613.22 : x
  2. Step 2: Convert to fraction form
    28,720,301.64/39,634,016.31 = 15,667,613.22/x
  3. Step 3: Cross multiply
    28,720,301.64x = 39,634,016.31 × 15,667,613.22
  4. Step 4: Simplify right side
    28,720,301.64x = 620,970,437,900,251.62
  5. Step 5: Solve for x
    x = 620,970,437,900,251.62/28,720,301.64
  6. Step 6: Final answer
    x = 21,621,306.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.