Home / 22,208.74-30,661.65-21,143.08

Finding the Fourth Proportional to 22,208.74, 30,661.65 and 21,143.08

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Solution

The fourth proportional to 22,208.74, 30,661.65 and 21,143.08 is: 29,190.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,208.74 : 30,661.65 = 21,143.08 : x
  2. Step 2: Convert to fraction form
    22,208.74/30,661.65 = 21,143.08/x
  3. Step 3: Cross multiply
    22,208.74x = 30,661.65 × 21,143.08
  4. Step 4: Simplify right side
    22,208.74x = 648,281,718.88
  5. Step 5: Solve for x
    x = 648,281,718.88/22,208.74
  6. Step 6: Final answer
    x = 29,190.39

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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.