Home / 10,203.78-15,303.93-2,806.50

Finding the Fourth Proportional to 10,203.78, 15,303.93 and 2,806.50

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Solution

The fourth proportional to 10,203.78, 15,303.93 and 2,806.50 is: 4,209.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,203.78 : 15,303.93 = 2,806.50 : x
  2. Step 2: Convert to fraction form
    10,203.78/15,303.93 = 2,806.50/x
  3. Step 3: Cross multiply
    10,203.78x = 15,303.93 × 2,806.50
  4. Step 4: Simplify right side
    10,203.78x = 42,950,479.55
  5. Step 5: Solve for x
    x = 42,950,479.55/10,203.78
  6. Step 6: Final answer
    x = 4,209.27

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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.