Home / 18,940.32-26,135.04-10,555.20

Finding the Fourth Proportional to 18,940.32, 26,135.04 and 10,555.20

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Solution

The fourth proportional to 18,940.32, 26,135.04 and 10,555.20 is: 14,564.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,940.32 : 26,135.04 = 10,555.20 : x
  2. Step 2: Convert to fraction form
    18,940.32/26,135.04 = 10,555.20/x
  3. Step 3: Cross multiply
    18,940.32x = 26,135.04 × 10,555.20
  4. Step 4: Simplify right side
    18,940.32x = 275,860,574.21
  5. Step 5: Solve for x
    x = 275,860,574.21/18,940.32
  6. Step 6: Final answer
    x = 14,564.73

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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.