Home / 10,986.93-15,168.95-7,216.79

Finding the Fourth Proportional to 10,986.93, 15,168.95 and 7,216.79

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Solution

The fourth proportional to 10,986.93, 15,168.95 and 7,216.79 is: 9,963.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,986.93 : 15,168.95 = 7,216.79 : x
  2. Step 2: Convert to fraction form
    10,986.93/15,168.95 = 7,216.79/x
  3. Step 3: Cross multiply
    10,986.93x = 15,168.95 × 7,216.79
  4. Step 4: Simplify right side
    10,986.93x = 109,471,014.74
  5. Step 5: Solve for x
    x = 109,471,014.74/10,986.93
  6. Step 6: Final answer
    x = 9,963.75

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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.