Home / 27,748.71-38,277.63-17,130.78

Finding the Fourth Proportional to 27,748.71, 38,277.63 and 17,130.78

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Solution

The fourth proportional to 27,748.71, 38,277.63 and 17,130.78 is: 23,630.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,748.71 : 38,277.63 = 17,130.78 : x
  2. Step 2: Convert to fraction form
    27,748.71/38,277.63 = 17,130.78/x
  3. Step 3: Cross multiply
    27,748.71x = 38,277.63 × 17,130.78
  4. Step 4: Simplify right side
    27,748.71x = 655,725,658.45
  5. Step 5: Solve for x
    x = 655,725,658.45/27,748.71
  6. Step 6: Final answer
    x = 23,630.85

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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.