Home / 27,848.61-38,431.14-15,911.91

Finding the Fourth Proportional to 27,848.61, 38,431.14 and 15,911.91

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Solution

The fourth proportional to 27,848.61, 38,431.14 and 15,911.91 is: 21,958.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,848.61 : 38,431.14 = 15,911.91 : x
  2. Step 2: Convert to fraction form
    27,848.61/38,431.14 = 15,911.91/x
  3. Step 3: Cross multiply
    27,848.61x = 38,431.14 × 15,911.91
  4. Step 4: Simplify right side
    27,848.61x = 611,512,840.88
  5. Step 5: Solve for x
    x = 611,512,840.88/27,848.61
  6. Step 6: Final answer
    x = 21,958.47

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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.