Home / 20,061.20-30,156.60-18,894.80

Finding the Fourth Proportional to 20,061.20, 30,156.60 and 18,894.80

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Solution

The fourth proportional to 20,061.20, 30,156.60 and 18,894.80 is: 28,403.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,061.20 : 30,156.60 = 18,894.80 : x
  2. Step 2: Convert to fraction form
    20,061.20/30,156.60 = 18,894.80/x
  3. Step 3: Cross multiply
    20,061.20x = 30,156.60 × 18,894.80
  4. Step 4: Simplify right side
    20,061.20x = 569,802,925.68
  5. Step 5: Solve for x
    x = 569,802,925.68/20,061.20
  6. Step 6: Final answer
    x = 28,403.23

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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.