Home / 10,488.86-15,719.45-5,557.17

Finding the Fourth Proportional to 10,488.86, 15,719.45 and 5,557.17

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Solution

The fourth proportional to 10,488.86, 15,719.45 and 5,557.17 is: 8,328.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,488.86 : 15,719.45 = 5,557.17 : x
  2. Step 2: Convert to fraction form
    10,488.86/15,719.45 = 5,557.17/x
  3. Step 3: Cross multiply
    10,488.86x = 15,719.45 × 5,557.17
  4. Step 4: Simplify right side
    10,488.86x = 87,355,628.17
  5. Step 5: Solve for x
    x = 87,355,628.17/10,488.86
  6. Step 6: Final answer
    x = 8,328.42

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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.