Home / 10,482.68-15,721.58-4,939.86

Finding the Fourth Proportional to 10,482.68, 15,721.58 and 4,939.86

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Solution

The fourth proportional to 10,482.68, 15,721.58 and 4,939.86 is: 7,408.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,482.68 : 15,721.58 = 4,939.86 : x
  2. Step 2: Convert to fraction form
    10,482.68/15,721.58 = 4,939.86/x
  3. Step 3: Cross multiply
    10,482.68x = 15,721.58 × 4,939.86
  4. Step 4: Simplify right side
    10,482.68x = 77,662,404.18
  5. Step 5: Solve for x
    x = 77,662,404.18/10,482.68
  6. Step 6: Final answer
    x = 7,408.64

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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.