Home / 15,189.74-20,955.35-9,520.63

Finding the Fourth Proportional to 15,189.74, 20,955.35 and 9,520.63

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Solution

The fourth proportional to 15,189.74, 20,955.35 and 9,520.63 is: 13,134.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,189.74 : 20,955.35 = 9,520.63 : x
  2. Step 2: Convert to fraction form
    15,189.74/20,955.35 = 9,520.63/x
  3. Step 3: Cross multiply
    15,189.74x = 20,955.35 × 9,520.63
  4. Step 4: Simplify right side
    15,189.74x = 199,508,105.28
  5. Step 5: Solve for x
    x = 199,508,105.28/15,189.74
  6. Step 6: Final answer
    x = 13,134.40

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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.