Home / 20,169.79-30,256.13-5,378.63

Finding the Fourth Proportional to 20,169.79, 30,256.13 and 5,378.63

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Solution

The fourth proportional to 20,169.79, 30,256.13 and 5,378.63 is: 8,068.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,169.79 : 30,256.13 = 5,378.63 : x
  2. Step 2: Convert to fraction form
    20,169.79/30,256.13 = 5,378.63/x
  3. Step 3: Cross multiply
    20,169.79x = 30,256.13 × 5,378.63
  4. Step 4: Simplify right side
    20,169.79x = 162,736,528.50
  5. Step 5: Solve for x
    x = 162,736,528.50/20,169.79
  6. Step 6: Final answer
    x = 8,068.33

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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.