Home / 10,971.68-15,143.76-6,724.16

Finding the Fourth Proportional to 10,971.68, 15,143.76 and 6,724.16

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Solution

The fourth proportional to 10,971.68, 15,143.76 and 6,724.16 is: 9,281.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,971.68 : 15,143.76 = 6,724.16 : x
  2. Step 2: Convert to fraction form
    10,971.68/15,143.76 = 6,724.16/x
  3. Step 3: Cross multiply
    10,971.68x = 15,143.76 × 6,724.16
  4. Step 4: Simplify right side
    10,971.68x = 101,829,065.24
  5. Step 5: Solve for x
    x = 101,829,065.24/10,971.68
  6. Step 6: Final answer
    x = 9,281.08

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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.