Home / 15,398.37-21,111.21-15,118.11

Finding the Fourth Proportional to 15,398.37, 21,111.21 and 15,118.11

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Solution

The fourth proportional to 15,398.37, 21,111.21 and 15,118.11 is: 20,726.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,398.37 : 21,111.21 = 15,118.11 : x
  2. Step 2: Convert to fraction form
    15,398.37/21,111.21 = 15,118.11/x
  3. Step 3: Cross multiply
    15,398.37x = 21,111.21 × 15,118.11
  4. Step 4: Simplify right side
    15,398.37x = 319,161,595.01
  5. Step 5: Solve for x
    x = 319,161,595.01/15,398.37
  6. Step 6: Final answer
    x = 20,726.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.