Home / 20,470.56-30,707.28-13,894.08

Finding the Fourth Proportional to 20,470.56, 30,707.28 and 13,894.08

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Solution

The fourth proportional to 20,470.56, 30,707.28 and 13,894.08 is: 20,842.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,470.56 : 30,707.28 = 13,894.08 : x
  2. Step 2: Convert to fraction form
    20,470.56/30,707.28 = 13,894.08/x
  3. Step 3: Cross multiply
    20,470.56x = 30,707.28 × 13,894.08
  4. Step 4: Simplify right side
    20,470.56x = 426,649,404.90
  5. Step 5: Solve for x
    x = 426,649,404.90/20,470.56
  6. Step 6: Final answer
    x = 20,842.10

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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.