Home / 21,150.57-31,726.79-11,783.49

Finding the Fourth Proportional to 21,150.57, 31,726.79 and 11,783.49

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Solution

The fourth proportional to 21,150.57, 31,726.79 and 11,783.49 is: 17,675.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,150.57 : 31,726.79 = 11,783.49 : x
  2. Step 2: Convert to fraction form
    21,150.57/31,726.79 = 11,783.49/x
  3. Step 3: Cross multiply
    21,150.57x = 31,726.79 × 11,783.49
  4. Step 4: Simplify right side
    21,150.57x = 373,852,154.06
  5. Step 5: Solve for x
    x = 373,852,154.06/21,150.57
  6. Step 6: Final answer
    x = 17,675.75

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1.5x scale

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.