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Finding the Fourth Proportional to 15,553.80, 23,388.30 and 13,019.40

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Solution

The fourth proportional to 15,553.80, 23,388.30 and 13,019.40 is: 19,577.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,553.80 : 23,388.30 = 13,019.40 : x
  2. Step 2: Convert to fraction form
    15,553.80/23,388.30 = 13,019.40/x
  3. Step 3: Cross multiply
    15,553.80x = 23,388.30 × 13,019.40
  4. Step 4: Simplify right side
    15,553.80x = 304,501,633.02
  5. Step 5: Solve for x
    x = 304,501,633.02/15,553.80
  6. Step 6: Final answer
    x = 19,577.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.