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Finding the Fourth Proportional to 18,159.94, 25,063.70 and 15,130.26

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Solution

The fourth proportional to 18,159.94, 25,063.70 and 15,130.26 is: 20,882.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,159.94 : 25,063.70 = 15,130.26 : x
  2. Step 2: Convert to fraction form
    18,159.94/25,063.70 = 15,130.26/x
  3. Step 3: Cross multiply
    18,159.94x = 25,063.70 × 15,130.26
  4. Step 4: Simplify right side
    18,159.94x = 379,220,297.56
  5. Step 5: Solve for x
    x = 379,220,297.56/18,159.94
  6. Step 6: Final answer
    x = 20,882.24

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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.