Home / 15,189.35-20,960.53-8,384.57

Finding the Fourth Proportional to 15,189.35, 20,960.53 and 8,384.57

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Solution

The fourth proportional to 15,189.35, 20,960.53 and 8,384.57 is: 11,570.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,189.35 : 20,960.53 = 8,384.57 : x
  2. Step 2: Convert to fraction form
    15,189.35/20,960.53 = 8,384.57/x
  3. Step 3: Cross multiply
    15,189.35x = 20,960.53 × 8,384.57
  4. Step 4: Simplify right side
    15,189.35x = 175,744,948.49
  5. Step 5: Solve for x
    x = 175,744,948.49/15,189.35
  6. Step 6: Final answer
    x = 11,570.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.