Home / 20,390,031.89-28,138,242.42-11,097,668.55

Finding the Fourth Proportional to 20,390,031.89, 28,138,242.42 and 11,097,668.55

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Solution

The fourth proportional to 20,390,031.89, 28,138,242.42 and 11,097,668.55 is: 15,314,781.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,390,031.89 : 28,138,242.42 = 11,097,668.55 : x
  2. Step 2: Convert to fraction form
    20,390,031.89/28,138,242.42 = 11,097,668.55/x
  3. Step 3: Cross multiply
    20,390,031.89x = 28,138,242.42 × 11,097,668.55
  4. Step 4: Simplify right side
    20,390,031.89x = 312,268,887,956,709.94
  5. Step 5: Solve for x
    x = 312,268,887,956,709.94/20,390,031.89
  6. Step 6: Final answer
    x = 15,314,781.74

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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.