Home / 27,648.18-38,154.58-15,715.48

Finding the Fourth Proportional to 27,648.18, 38,154.58 and 15,715.48

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Solution

The fourth proportional to 27,648.18, 38,154.58 and 15,715.48 is: 21,687.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,648.18 : 38,154.58 = 15,715.48 : x
  2. Step 2: Convert to fraction form
    27,648.18/38,154.58 = 15,715.48/x
  3. Step 3: Cross multiply
    27,648.18x = 38,154.58 × 15,715.48
  4. Step 4: Simplify right side
    27,648.18x = 599,617,538.90
  5. Step 5: Solve for x
    x = 599,617,538.90/27,648.18
  6. Step 6: Final answer
    x = 21,687.41

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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.