Home / 27,693.12-38,215.08-15,115.44

Finding the Fourth Proportional to 27,693.12, 38,215.08 and 15,115.44

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Solution

The fourth proportional to 27,693.12, 38,215.08 and 15,115.44 is: 20,858.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,693.12 : 38,215.08 = 15,115.44 : x
  2. Step 2: Convert to fraction form
    27,693.12/38,215.08 = 15,115.44/x
  3. Step 3: Cross multiply
    27,693.12x = 38,215.08 × 15,115.44
  4. Step 4: Simplify right side
    27,693.12x = 577,637,748.84
  5. Step 5: Solve for x
    x = 577,637,748.84/27,693.12
  6. Step 6: Final answer
    x = 20,858.53

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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.