Home / 18,561.03-25,592.69-12,900.63

Finding the Fourth Proportional to 18,561.03, 25,592.69 and 12,900.63

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Solution

The fourth proportional to 18,561.03, 25,592.69 and 12,900.63 is: 17,787.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,561.03 : 25,592.69 = 12,900.63 : x
  2. Step 2: Convert to fraction form
    18,561.03/25,592.69 = 12,900.63/x
  3. Step 3: Cross multiply
    18,561.03x = 25,592.69 × 12,900.63
  4. Step 4: Simplify right side
    18,561.03x = 330,161,856.65
  5. Step 5: Solve for x
    x = 330,161,856.65/18,561.03
  6. Step 6: Final answer
    x = 17,787.91

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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.