Home / 27,778.12-38,332.86-15,845.32

Finding the Fourth Proportional to 27,778.12, 38,332.86 and 15,845.32

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Solution

The fourth proportional to 27,778.12, 38,332.86 and 15,845.32 is: 21,866.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,778.12 : 38,332.86 = 15,845.32 : x
  2. Step 2: Convert to fraction form
    27,778.12/38,332.86 = 15,845.32/x
  3. Step 3: Cross multiply
    27,778.12x = 38,332.86 × 15,845.32
  4. Step 4: Simplify right side
    27,778.12x = 607,396,433.22
  5. Step 5: Solve for x
    x = 607,396,433.22/27,778.12
  6. Step 6: Final answer
    x = 21,866.00

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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.