Home / 21,995.01-30,346.11-13,488.39

Finding the Fourth Proportional to 21,995.01, 30,346.11 and 13,488.39

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Solution

The fourth proportional to 21,995.01, 30,346.11 and 13,488.39 is: 18,609.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,995.01 : 30,346.11 = 13,488.39 : x
  2. Step 2: Convert to fraction form
    21,995.01/30,346.11 = 13,488.39/x
  3. Step 3: Cross multiply
    21,995.01x = 30,346.11 × 13,488.39
  4. Step 4: Simplify right side
    21,995.01x = 409,320,166.66
  5. Step 5: Solve for x
    x = 409,320,166.66/21,995.01
  6. Step 6: Final answer
    x = 18,609.68

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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.