Home / 20,089,421.55-27,729,301.85-13,121,164.38

Finding the Fourth Proportional to 20,089,421.55, 27,729,301.85 and 13,121,164.38

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Solution

The fourth proportional to 20,089,421.55, 27,729,301.85 and 13,121,164.38 is: 18,111,060.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,089,421.55 : 27,729,301.85 = 13,121,164.38 : x
  2. Step 2: Convert to fraction form
    20,089,421.55/27,729,301.85 = 13,121,164.38/x
  3. Step 3: Cross multiply
    20,089,421.55x = 27,729,301.85 × 13,121,164.38
  4. Step 4: Simplify right side
    20,089,421.55x = 363,840,727,650,882.31
  5. Step 5: Solve for x
    x = 363,840,727,650,882.31/20,089,421.55
  6. Step 6: Final answer
    x = 18,111,060.43

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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.