Home / 18,219.70-25,143.47-10,153.36

Finding the Fourth Proportional to 18,219.70, 25,143.47 and 10,153.36

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Solution

The fourth proportional to 18,219.70, 25,143.47 and 10,153.36 is: 14,011.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,219.70 : 25,143.47 = 10,153.36 : x
  2. Step 2: Convert to fraction form
    18,219.70/25,143.47 = 10,153.36/x
  3. Step 3: Cross multiply
    18,219.70x = 25,143.47 × 10,153.36
  4. Step 4: Simplify right side
    18,219.70x = 255,290,702.56
  5. Step 5: Solve for x
    x = 255,290,702.56/18,219.70
  6. Step 6: Final answer
    x = 14,011.80

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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.