Home / 15,554.08-21,451.41-13,143.25

Finding the Fourth Proportional to 15,554.08, 21,451.41 and 13,143.25

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Solution

The fourth proportional to 15,554.08, 21,451.41 and 13,143.25 is: 18,126.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,554.08 : 21,451.41 = 13,143.25 : x
  2. Step 2: Convert to fraction form
    15,554.08/21,451.41 = 13,143.25/x
  3. Step 3: Cross multiply
    15,554.08x = 21,451.41 × 13,143.25
  4. Step 4: Simplify right side
    15,554.08x = 281,941,244.48
  5. Step 5: Solve for x
    x = 281,941,244.48/15,554.08
  6. Step 6: Final answer
    x = 18,126.51

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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.