Home / 10,971.23-15,139.27-6,720.35

Finding the Fourth Proportional to 10,971.23, 15,139.27 and 6,720.35

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Solution

The fourth proportional to 10,971.23, 15,139.27 and 6,720.35 is: 9,273.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,971.23 : 15,139.27 = 6,720.35 : x
  2. Step 2: Convert to fraction form
    10,971.23/15,139.27 = 6,720.35/x
  3. Step 3: Cross multiply
    10,971.23x = 15,139.27 × 6,720.35
  4. Step 4: Simplify right side
    10,971.23x = 101,741,193.14
  5. Step 5: Solve for x
    x = 101,741,193.14/10,971.23
  6. Step 6: Final answer
    x = 9,273.45

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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.