Home / 11,160.15-15,399.87-6,445.95

Finding the Fourth Proportional to 11,160.15, 15,399.87 and 6,445.95

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Solution

The fourth proportional to 11,160.15, 15,399.87 and 6,445.95 is: 8,894.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,160.15 : 15,399.87 = 6,445.95 : x
  2. Step 2: Convert to fraction form
    11,160.15/15,399.87 = 6,445.95/x
  3. Step 3: Cross multiply
    11,160.15x = 15,399.87 × 6,445.95
  4. Step 4: Simplify right side
    11,160.15x = 99,266,792.03
  5. Step 5: Solve for x
    x = 99,266,792.03/11,160.15
  6. Step 6: Final answer
    x = 8,894.75

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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.