Home / 13,625.87-18,810.09-9,152.78

Finding the Fourth Proportional to 13,625.87, 18,810.09 and 9,152.78

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Solution

The fourth proportional to 13,625.87, 18,810.09 and 9,152.78 is: 12,635.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,625.87 : 18,810.09 = 9,152.78 : x
  2. Step 2: Convert to fraction form
    13,625.87/18,810.09 = 9,152.78/x
  3. Step 3: Cross multiply
    13,625.87x = 18,810.09 × 9,152.78
  4. Step 4: Simplify right side
    13,625.87x = 172,164,521.50
  5. Step 5: Solve for x
    x = 172,164,521.50/13,625.87
  6. Step 6: Final answer
    x = 12,635.13

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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.