Home / 21,963.04-30,309.05-11,891.50

Finding the Fourth Proportional to 21,963.04, 30,309.05 and 11,891.50

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Solution

The fourth proportional to 21,963.04, 30,309.05 and 11,891.50 is: 16,410.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,963.04 : 30,309.05 = 11,891.50 : x
  2. Step 2: Convert to fraction form
    21,963.04/30,309.05 = 11,891.50/x
  3. Step 3: Cross multiply
    21,963.04x = 30,309.05 × 11,891.50
  4. Step 4: Simplify right side
    21,963.04x = 360,420,068.08
  5. Step 5: Solve for x
    x = 360,420,068.08/21,963.04
  6. Step 6: Final answer
    x = 16,410.30

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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.