Home / 19,335.84-28,981.27-15,831.78

Finding the Fourth Proportional to 19,335.84, 28,981.27 and 15,831.78

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Solution

The fourth proportional to 19,335.84, 28,981.27 and 15,831.78 is: 23,729.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,335.84 : 28,981.27 = 15,831.78 : x
  2. Step 2: Convert to fraction form
    19,335.84/28,981.27 = 15,831.78/x
  3. Step 3: Cross multiply
    19,335.84x = 28,981.27 × 15,831.78
  4. Step 4: Simplify right side
    19,335.84x = 458,825,090.76
  5. Step 5: Solve for x
    x = 458,825,090.76/19,335.84
  6. Step 6: Final answer
    x = 23,729.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.