Home / 18,940.84-26,135.31-10,981.51

Finding the Fourth Proportional to 18,940.84, 26,135.31 and 10,981.51

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Solution

The fourth proportional to 18,940.84, 26,135.31 and 10,981.51 is: 15,152.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,940.84 : 26,135.31 = 10,981.51 : x
  2. Step 2: Convert to fraction form
    18,940.84/26,135.31 = 10,981.51/x
  3. Step 3: Cross multiply
    18,940.84x = 26,135.31 × 10,981.51
  4. Step 4: Simplify right side
    18,940.84x = 287,005,168.12
  5. Step 5: Solve for x
    x = 287,005,168.12/18,940.84
  6. Step 6: Final answer
    x = 15,152.72

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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.