Home / 21,362.52-29,480.20-12,415.28

Finding the Fourth Proportional to 21,362.52, 29,480.20 and 12,415.28

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Solution

The fourth proportional to 21,362.52, 29,480.20 and 12,415.28 is: 17,133.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,362.52 : 29,480.20 = 12,415.28 : x
  2. Step 2: Convert to fraction form
    21,362.52/29,480.20 = 12,415.28/x
  3. Step 3: Cross multiply
    21,362.52x = 29,480.20 × 12,415.28
  4. Step 4: Simplify right side
    21,362.52x = 366,004,937.46
  5. Step 5: Solve for x
    x = 366,004,937.46/21,362.52
  6. Step 6: Final answer
    x = 17,133.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.