Home / 15,189.55-20,937.70-10,401.21

Finding the Fourth Proportional to 15,189.55, 20,937.70 and 10,401.21

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Solution

The fourth proportional to 15,189.55, 20,937.70 and 10,401.21 is: 14,337.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,189.55 : 20,937.70 = 10,401.21 : x
  2. Step 2: Convert to fraction form
    15,189.55/20,937.70 = 10,401.21/x
  3. Step 3: Cross multiply
    15,189.55x = 20,937.70 × 10,401.21
  4. Step 4: Simplify right side
    15,189.55x = 217,777,427.62
  5. Step 5: Solve for x
    x = 217,777,427.62/15,189.55
  6. Step 6: Final answer
    x = 14,337.32

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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.