Home / 15,219.33-21,008.51-13,623.15

Finding the Fourth Proportional to 15,219.33, 21,008.51 and 13,623.15

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Solution

The fourth proportional to 15,219.33, 21,008.51 and 13,623.15 is: 18,805.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,219.33 : 21,008.51 = 13,623.15 : x
  2. Step 2: Convert to fraction form
    15,219.33/21,008.51 = 13,623.15/x
  3. Step 3: Cross multiply
    15,219.33x = 21,008.51 × 13,623.15
  4. Step 4: Simplify right side
    15,219.33x = 286,202,083.01
  5. Step 5: Solve for x
    x = 286,202,083.01/15,219.33
  6. Step 6: Final answer
    x = 18,805.17

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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.