Home / 27,638.34-38,142.26-15,542.63

Finding the Fourth Proportional to 27,638.34, 38,142.26 and 15,542.63

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Solution

The fourth proportional to 27,638.34, 38,142.26 and 15,542.63 is: 21,449.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,638.34 : 38,142.26 = 15,542.63 : x
  2. Step 2: Convert to fraction form
    27,638.34/38,142.26 = 15,542.63/x
  3. Step 3: Cross multiply
    27,638.34x = 38,142.26 × 15,542.63
  4. Step 4: Simplify right side
    27,638.34x = 592,831,006.29
  5. Step 5: Solve for x
    x = 592,831,006.29/27,638.34
  6. Step 6: Final answer
    x = 21,449.59

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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.