Home / 27,825.57-38,402.51-15,890.63

Finding the Fourth Proportional to 27,825.57, 38,402.51 and 15,890.63

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Solution

The fourth proportional to 27,825.57, 38,402.51 and 15,890.63 is: 21,930.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,825.57 : 38,402.51 = 15,890.63 : x
  2. Step 2: Convert to fraction form
    27,825.57/38,402.51 = 15,890.63/x
  3. Step 3: Cross multiply
    27,825.57x = 38,402.51 × 15,890.63
  4. Step 4: Simplify right side
    27,825.57x = 610,239,806.02
  5. Step 5: Solve for x
    x = 610,239,806.02/27,825.57
  6. Step 6: Final answer
    x = 21,930.90

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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.