Home / 10,968.75-15,139.31-7,570.53

Finding the Fourth Proportional to 10,968.75, 15,139.31 and 7,570.53

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Solution

The fourth proportional to 10,968.75, 15,139.31 and 7,570.53 is: 10,449.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,968.75 : 15,139.31 = 7,570.53 : x
  2. Step 2: Convert to fraction form
    10,968.75/15,139.31 = 7,570.53/x
  3. Step 3: Cross multiply
    10,968.75x = 15,139.31 × 7,570.53
  4. Step 4: Simplify right side
    10,968.75x = 114,612,562.68
  5. Step 5: Solve for x
    x = 114,612,562.68/10,968.75
  6. Step 6: Final answer
    x = 10,449.01

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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.