Home / 10,478.21-15,712.29-4,926.87

Finding the Fourth Proportional to 10,478.21, 15,712.29 and 4,926.87

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Solution

The fourth proportional to 10,478.21, 15,712.29 and 4,926.87 is: 7,387.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,478.21 : 15,712.29 = 4,926.87 : x
  2. Step 2: Convert to fraction form
    10,478.21/15,712.29 = 4,926.87/x
  3. Step 3: Cross multiply
    10,478.21x = 15,712.29 × 4,926.87
  4. Step 4: Simplify right side
    10,478.21x = 77,412,410.23
  5. Step 5: Solve for x
    x = 77,412,410.23/10,478.21
  6. Step 6: Final answer
    x = 7,387.95

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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.