Home / 21,339.72-29,448.90-12,392.46

Finding the Fourth Proportional to 21,339.72, 29,448.90 and 12,392.46

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Solution

The fourth proportional to 21,339.72, 29,448.90 and 12,392.46 is: 17,101.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,339.72 : 29,448.90 = 12,392.46 : x
  2. Step 2: Convert to fraction form
    21,339.72/29,448.90 = 12,392.46/x
  3. Step 3: Cross multiply
    21,339.72x = 29,448.90 × 12,392.46
  4. Step 4: Simplify right side
    21,339.72x = 364,944,315.29
  5. Step 5: Solve for x
    x = 364,944,315.29/21,339.72
  6. Step 6: Final answer
    x = 17,101.64

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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.