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Finding the Fourth Proportional to 18,937.49, 26,133.84 and 10,984.43

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Solution

The fourth proportional to 18,937.49, 26,133.84 and 10,984.43 is: 15,158.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,937.49 : 26,133.84 = 10,984.43 : x
  2. Step 2: Convert to fraction form
    18,937.49/26,133.84 = 10,984.43/x
  3. Step 3: Cross multiply
    18,937.49x = 26,133.84 × 10,984.43
  4. Step 4: Simplify right side
    18,937.49x = 287,065,336.11
  5. Step 5: Solve for x
    x = 287,065,336.11/18,937.49
  6. Step 6: Final answer
    x = 15,158.57

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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.