Home / 18,901.45-26,103-15,577.21

Finding the Fourth Proportional to 18,901.45, 26,103 and 15,577.21

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Solution

The fourth proportional to 18,901.45, 26,103 and 15,577.21 is: 21,512.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,901.45 : 26,103 = 15,577.21 : x
  2. Step 2: Convert to fraction form
    18,901.45/26,103 = 15,577.21/x
  3. Step 3: Cross multiply
    18,901.45x = 26,103 × 15,577.21
  4. Step 4: Simplify right side
    18,901.45x = 406,611,912.63
  5. Step 5: Solve for x
    x = 406,611,912.63/18,901.45
  6. Step 6: Final answer
    x = 21,512.21

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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.