Home / 20,390,812.48-28,140,119.04-11,224,308.16

Finding the Fourth Proportional to 20,390,812.48, 28,140,119.04 and 11,224,308.16

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Solution

The fourth proportional to 20,390,812.48, 28,140,119.04 and 11,224,308.16 is: 15,489,984.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,390,812.48 : 28,140,119.04 = 11,224,308.16 : x
  2. Step 2: Convert to fraction form
    20,390,812.48/28,140,119.04 = 11,224,308.16/x
  3. Step 3: Cross multiply
    20,390,812.48x = 28,140,119.04 × 11,224,308.16
  4. Step 4: Simplify right side
    20,390,812.48x = 315,853,367,764,043.38
  5. Step 5: Solve for x
    x = 315,853,367,764,043.38/20,390,812.48
  6. Step 6: Final answer
    x = 15,489,984.43

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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.