Home / 21,321.66-29,426.67-15,373.02

Finding the Fourth Proportional to 21,321.66, 29,426.67 and 15,373.02

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Solution

The fourth proportional to 21,321.66, 29,426.67 and 15,373.02 is: 21,216.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,321.66 : 29,426.67 = 15,373.02 : x
  2. Step 2: Convert to fraction form
    21,321.66/29,426.67 = 15,373.02/x
  3. Step 3: Cross multiply
    21,321.66x = 29,426.67 × 15,373.02
  4. Step 4: Simplify right side
    21,321.66x = 452,376,786.44
  5. Step 5: Solve for x
    x = 452,376,786.44/21,321.66
  6. Step 6: Final answer
    x = 21,216.77

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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.