Home / 20,350.40-30,534.38-10,988.55

Finding the Fourth Proportional to 20,350.40, 30,534.38 and 10,988.55

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Solution

The fourth proportional to 20,350.40, 30,534.38 and 10,988.55 is: 16,487.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,350.40 : 30,534.38 = 10,988.55 : x
  2. Step 2: Convert to fraction form
    20,350.40/30,534.38 = 10,988.55/x
  3. Step 3: Cross multiply
    20,350.40x = 30,534.38 × 10,988.55
  4. Step 4: Simplify right side
    20,350.40x = 335,528,506.41
  5. Step 5: Solve for x
    x = 335,528,506.41/20,350.40
  6. Step 6: Final answer
    x = 16,487.57

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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.