Home / 21,050.64-31,551.36-11,688.48

Finding the Fourth Proportional to 21,050.64, 31,551.36 and 11,688.48

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Solution

The fourth proportional to 21,050.64, 31,551.36 and 11,688.48 is: 17,519.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,050.64 : 31,551.36 = 11,688.48 : x
  2. Step 2: Convert to fraction form
    21,050.64/31,551.36 = 11,688.48/x
  3. Step 3: Cross multiply
    21,050.64x = 31,551.36 × 11,688.48
  4. Step 4: Simplify right side
    21,050.64x = 368,787,440.33
  5. Step 5: Solve for x
    x = 368,787,440.33/21,050.64
  6. Step 6: Final answer
    x = 17,519.06

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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.