Home / 21,784.52-30,055.78-12,351.26

Finding the Fourth Proportional to 21,784.52, 30,055.78 and 12,351.26

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Solution

The fourth proportional to 21,784.52, 30,055.78 and 12,351.26 is: 17,040.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,784.52 : 30,055.78 = 12,351.26 : x
  2. Step 2: Convert to fraction form
    21,784.52/30,055.78 = 12,351.26/x
  3. Step 3: Cross multiply
    21,784.52x = 30,055.78 × 12,351.26
  4. Step 4: Simplify right side
    21,784.52x = 371,226,753.28
  5. Step 5: Solve for x
    x = 371,226,753.28/21,784.52
  6. Step 6: Final answer
    x = 17,040.85

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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.