Home / 20,275.79-30,373.38-12,368.57

Finding the Fourth Proportional to 20,275.79, 30,373.38 and 12,368.57

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Solution

The fourth proportional to 20,275.79, 30,373.38 and 12,368.57 is: 18,528.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,275.79 : 30,373.38 = 12,368.57 : x
  2. Step 2: Convert to fraction form
    20,275.79/30,373.38 = 12,368.57/x
  3. Step 3: Cross multiply
    20,275.79x = 30,373.38 × 12,368.57
  4. Step 4: Simplify right side
    20,275.79x = 375,675,124.80
  5. Step 5: Solve for x
    x = 375,675,124.80/20,275.79
  6. Step 6: Final answer
    x = 18,528.27

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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.