Home / 27,831.90-38,406.65-15,732.12

Finding the Fourth Proportional to 27,831.90, 38,406.65 and 15,732.12

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Solution

The fourth proportional to 27,831.90, 38,406.65 and 15,732.12 is: 21,709.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,831.90 : 38,406.65 = 15,732.12 : x
  2. Step 2: Convert to fraction form
    27,831.90/38,406.65 = 15,732.12/x
  3. Step 3: Cross multiply
    27,831.90x = 38,406.65 × 15,732.12
  4. Step 4: Simplify right side
    27,831.90x = 604,217,947.94
  5. Step 5: Solve for x
    x = 604,217,947.94/27,831.90
  6. Step 6: Final answer
    x = 21,709.55

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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.