Home / 21,891.36-30,210.27-12,460.53

Finding the Fourth Proportional to 21,891.36, 30,210.27 and 12,460.53

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Solution

The fourth proportional to 21,891.36, 30,210.27 and 12,460.53 is: 17,195.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,891.36 : 30,210.27 = 12,460.53 : x
  2. Step 2: Convert to fraction form
    21,891.36/30,210.27 = 12,460.53/x
  3. Step 3: Cross multiply
    21,891.36x = 30,210.27 × 12,460.53
  4. Step 4: Simplify right side
    21,891.36x = 376,435,975.64
  5. Step 5: Solve for x
    x = 376,435,975.64/21,891.36
  6. Step 6: Final answer
    x = 17,195.64

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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.