Home / 28,549.36-42,828.96-9,831.28

Finding the Fourth Proportional to 28,549.36, 42,828.96 and 9,831.28

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Solution

The fourth proportional to 28,549.36, 42,828.96 and 9,831.28 is: 14,748.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,549.36 : 42,828.96 = 9,831.28 : x
  2. Step 2: Convert to fraction form
    28,549.36/42,828.96 = 9,831.28/x
  3. Step 3: Cross multiply
    28,549.36x = 42,828.96 × 9,831.28
  4. Step 4: Simplify right side
    28,549.36x = 421,063,497.87
  5. Step 5: Solve for x
    x = 421,063,497.87/28,549.36
  6. Step 6: Final answer
    x = 14,748.61

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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.