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Finding the Fourth Proportional to 18,937.10, 28,403.02 and 10,048.54

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Solution

The fourth proportional to 18,937.10, 28,403.02 and 10,048.54 is: 15,071.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,937.10 : 28,403.02 = 10,048.54 : x
  2. Step 2: Convert to fraction form
    18,937.10/28,403.02 = 10,048.54/x
  3. Step 3: Cross multiply
    18,937.10x = 28,403.02 × 10,048.54
  4. Step 4: Simplify right side
    18,937.10x = 285,408,882.59
  5. Step 5: Solve for x
    x = 285,408,882.59/18,937.10
  6. Step 6: Final answer
    x = 15,071.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.