Home / 27,831.20-38,421.84-18,926.24

Finding the Fourth Proportional to 27,831.20, 38,421.84 and 18,926.24

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Solution

The fourth proportional to 27,831.20, 38,421.84 and 18,926.24 is: 26,128.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,831.20 : 38,421.84 = 18,926.24 : x
  2. Step 2: Convert to fraction form
    27,831.20/38,421.84 = 18,926.24/x
  3. Step 3: Cross multiply
    27,831.20x = 38,421.84 × 18,926.24
  4. Step 4: Simplify right side
    27,831.20x = 727,180,965.08
  5. Step 5: Solve for x
    x = 727,180,965.08/27,831.20
  6. Step 6: Final answer
    x = 26,128.26

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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.