Home / 15,778.58-21,775.95-11,792.79

Finding the Fourth Proportional to 15,778.58, 21,775.95 and 11,792.79

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Solution

The fourth proportional to 15,778.58, 21,775.95 and 11,792.79 is: 16,275.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,778.58 : 21,775.95 = 11,792.79 : x
  2. Step 2: Convert to fraction form
    15,778.58/21,775.95 = 11,792.79/x
  3. Step 3: Cross multiply
    15,778.58x = 21,775.95 × 11,792.79
  4. Step 4: Simplify right side
    15,778.58x = 256,799,205.40
  5. Step 5: Solve for x
    x = 256,799,205.40/15,778.58
  6. Step 6: Final answer
    x = 16,275.18

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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.