Home / 27,637.12-38,138.34-15,703.12

Finding the Fourth Proportional to 27,637.12, 38,138.34 and 15,703.12

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Solution

The fourth proportional to 27,637.12, 38,138.34 and 15,703.12 is: 21,669.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,637.12 : 38,138.34 = 15,703.12 : x
  2. Step 2: Convert to fraction form
    27,637.12/38,138.34 = 15,703.12/x
  3. Step 3: Cross multiply
    27,637.12x = 38,138.34 × 15,703.12
  4. Step 4: Simplify right side
    27,637.12x = 598,890,929.62
  5. Step 5: Solve for x
    x = 598,890,929.62/27,637.12
  6. Step 6: Final answer
    x = 21,669.80

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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.