Home / 20,648.08-30,929.28-10,086.22

Finding the Fourth Proportional to 20,648.08, 30,929.28 and 10,086.22

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Solution

The fourth proportional to 20,648.08, 30,929.28 and 10,086.22 is: 15,108.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,648.08 : 30,929.28 = 10,086.22 : x
  2. Step 2: Convert to fraction form
    20,648.08/30,929.28 = 10,086.22/x
  3. Step 3: Cross multiply
    20,648.08x = 30,929.28 × 10,086.22
  4. Step 4: Simplify right side
    20,648.08x = 311,959,522.52
  5. Step 5: Solve for x
    x = 311,959,522.52/20,648.08
  6. Step 6: Final answer
    x = 15,108.40

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1.5x scale

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.