Home / 27,778.12-38,333.77-15,681.15

Finding the Fourth Proportional to 27,778.12, 38,333.77 and 15,681.15

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Solution

The fourth proportional to 27,778.12, 38,333.77 and 15,681.15 is: 21,639.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,778.12 : 38,333.77 = 15,681.15 : x
  2. Step 2: Convert to fraction form
    27,778.12/38,333.77 = 15,681.15/x
  3. Step 3: Cross multiply
    27,778.12x = 38,333.77 × 15,681.15
  4. Step 4: Simplify right side
    27,778.12x = 601,117,597.44
  5. Step 5: Solve for x
    x = 601,117,597.44/27,778.12
  6. Step 6: Final answer
    x = 21,639.97

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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.