Home / 21,984.02-30,340.62-12,424.31

Finding the Fourth Proportional to 21,984.02, 30,340.62 and 12,424.31

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Solution

The fourth proportional to 21,984.02, 30,340.62 and 12,424.31 is: 17,147.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,984.02 : 30,340.62 = 12,424.31 : x
  2. Step 2: Convert to fraction form
    21,984.02/30,340.62 = 12,424.31/x
  3. Step 3: Cross multiply
    21,984.02x = 30,340.62 × 12,424.31
  4. Step 4: Simplify right side
    21,984.02x = 376,961,206.35
  5. Step 5: Solve for x
    x = 376,961,206.35/21,984.02
  6. Step 6: Final answer
    x = 17,147.06

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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.