Home / 21,334.47-29,441.52-12,387.21

Finding the Fourth Proportional to 21,334.47, 29,441.52 and 12,387.21

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Solution

The fourth proportional to 21,334.47, 29,441.52 and 12,387.21 is: 17,094.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,334.47 : 29,441.52 = 12,387.21 : x
  2. Step 2: Convert to fraction form
    21,334.47/29,441.52 = 12,387.21/x
  3. Step 3: Cross multiply
    21,334.47x = 29,441.52 × 12,387.21
  4. Step 4: Simplify right side
    21,334.47x = 364,698,290.96
  5. Step 5: Solve for x
    x = 364,698,290.96/21,334.47
  6. Step 6: Final answer
    x = 17,094.32

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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.