Home / 18,934.95-26,108.69-15,521.25

Finding the Fourth Proportional to 18,934.95, 26,108.69 and 15,521.25

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Solution

The fourth proportional to 18,934.95, 26,108.69 and 15,521.25 is: 21,401.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,934.95 : 26,108.69 = 15,521.25 : x
  2. Step 2: Convert to fraction form
    18,934.95/26,108.69 = 15,521.25/x
  3. Step 3: Cross multiply
    18,934.95x = 26,108.69 × 15,521.25
  4. Step 4: Simplify right side
    18,934.95x = 405,239,427.06
  5. Step 5: Solve for x
    x = 405,239,427.06/18,934.95
  6. Step 6: Final answer
    x = 21,401.66

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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.