Home / 11,315.52-15,616.40-6,280.71

Finding the Fourth Proportional to 11,315.52, 15,616.40 and 6,280.71

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Solution

The fourth proportional to 11,315.52, 15,616.40 and 6,280.71 is: 8,667.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,315.52 : 15,616.40 = 6,280.71 : x
  2. Step 2: Convert to fraction form
    11,315.52/15,616.40 = 6,280.71/x
  3. Step 3: Cross multiply
    11,315.52x = 15,616.40 × 6,280.71
  4. Step 4: Simplify right side
    11,315.52x = 98,082,121.44
  5. Step 5: Solve for x
    x = 98,082,121.44/11,315.52
  6. Step 6: Final answer
    x = 8,667.93

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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.