Home / 11,580.72-15,981.40-6,275.54

Finding the Fourth Proportional to 11,580.72, 15,981.40 and 6,275.54

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Solution

The fourth proportional to 11,580.72, 15,981.40 and 6,275.54 is: 8,660.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,580.72 : 15,981.40 = 6,275.54 : x
  2. Step 2: Convert to fraction form
    11,580.72/15,981.40 = 6,275.54/x
  3. Step 3: Cross multiply
    11,580.72x = 15,981.40 × 6,275.54
  4. Step 4: Simplify right side
    11,580.72x = 100,291,962.75
  5. Step 5: Solve for x
    x = 100,291,962.75/11,580.72
  6. Step 6: Final answer
    x = 8,660.26

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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.