Home / 20,421,612.43-28,181,825.52-11,254,255.18

Finding the Fourth Proportional to 20,421,612.43, 28,181,825.52 and 11,254,255.18

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Solution

The fourth proportional to 20,421,612.43, 28,181,825.52 and 11,254,255.18 is: 15,530,872.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,421,612.43 : 28,181,825.52 = 11,254,255.18 : x
  2. Step 2: Convert to fraction form
    20,421,612.43/28,181,825.52 = 11,254,255.18/x
  3. Step 3: Cross multiply
    20,421,612.43x = 28,181,825.52 × 11,254,255.18
  4. Step 4: Simplify right side
    20,421,612.43x = 317,165,455,989,109.75
  5. Step 5: Solve for x
    x = 317,165,455,989,109.75/20,421,612.43
  6. Step 6: Final answer
    x = 15,530,872.35

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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.