Home / 20,421,881.16-28,182,195.56-11,254,523.92

Finding the Fourth Proportional to 20,421,881.16, 28,182,195.56 and 11,254,523.92

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Solution

The fourth proportional to 20,421,881.16, 28,182,195.56 and 11,254,523.92 is: 15,531,242.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,421,881.16 : 28,182,195.56 = 11,254,523.92 : x
  2. Step 2: Convert to fraction form
    20,421,881.16/28,182,195.56 = 11,254,523.92/x
  3. Step 3: Cross multiply
    20,421,881.16x = 28,182,195.56 × 11,254,523.92
  4. Step 4: Simplify right side
    20,421,881.16x = 317,177,194,048,137.75
  5. Step 5: Solve for x
    x = 317,177,194,048,137.75/20,421,881.16
  6. Step 6: Final answer
    x = 15,531,242.77

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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.