Home / 27,815.35-38,383.12-15,712.08

Finding the Fourth Proportional to 27,815.35, 38,383.12 and 15,712.08

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Solution

The fourth proportional to 27,815.35, 38,383.12 and 15,712.08 is: 21,681.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,815.35 : 38,383.12 = 15,712.08 : x
  2. Step 2: Convert to fraction form
    27,815.35/38,383.12 = 15,712.08/x
  3. Step 3: Cross multiply
    27,815.35x = 38,383.12 × 15,712.08
  4. Step 4: Simplify right side
    27,815.35x = 603,078,439.41
  5. Step 5: Solve for x
    x = 603,078,439.41/27,815.35
  6. Step 6: Final answer
    x = 21,681.50

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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.