Home / 21,688.78-32,537.96-9,219.46

Finding the Fourth Proportional to 21,688.78, 32,537.96 and 9,219.46

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Solution

The fourth proportional to 21,688.78, 32,537.96 and 9,219.46 is: 13,831.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,688.78 : 32,537.96 = 9,219.46 : x
  2. Step 2: Convert to fraction form
    21,688.78/32,537.96 = 9,219.46/x
  3. Step 3: Cross multiply
    21,688.78x = 32,537.96 × 9,219.46
  4. Step 4: Simplify right side
    21,688.78x = 299,982,374.60
  5. Step 5: Solve for x
    x = 299,982,374.60/21,688.78
  6. Step 6: Final answer
    x = 13,831.22

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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.