Home / 13,385,881.60-20,120,812.80-13,133,939.20

Finding the Fourth Proportional to 13,385,881.60, 20,120,812.80 and 13,133,939.20

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Solution

The fourth proportional to 13,385,881.60, 20,120,812.80 and 13,133,939.20 is: 19,742,108.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,385,881.60 : 20,120,812.80 = 13,133,939.20 : x
  2. Step 2: Convert to fraction form
    13,385,881.60/20,120,812.80 = 13,133,939.20/x
  3. Step 3: Cross multiply
    13,385,881.60x = 20,120,812.80 × 13,133,939.20
  4. Step 4: Simplify right side
    13,385,881.60x = 264,265,531,969,781.75
  5. Step 5: Solve for x
    x = 264,265,531,969,781.75/13,385,881.60
  6. Step 6: Final answer
    x = 19,742,108.88

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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.