Home / 15,373.17-21,218.09-12,009.33

Finding the Fourth Proportional to 15,373.17, 21,218.09 and 12,009.33

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Solution

The fourth proportional to 15,373.17, 21,218.09 and 12,009.33 is: 16,575.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,373.17 : 21,218.09 = 12,009.33 : x
  2. Step 2: Convert to fraction form
    15,373.17/21,218.09 = 12,009.33/x
  3. Step 3: Cross multiply
    15,373.17x = 21,218.09 × 12,009.33
  4. Step 4: Simplify right side
    15,373.17x = 254,814,984.73
  5. Step 5: Solve for x
    x = 254,814,984.73/15,373.17
  6. Step 6: Final answer
    x = 16,575.31

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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.