Home / 10,390.19-15,581.79-3,368.34

Finding the Fourth Proportional to 10,390.19, 15,581.79 and 3,368.34

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Solution

The fourth proportional to 10,390.19, 15,581.79 and 3,368.34 is: 5,051.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,390.19 : 15,581.79 = 3,368.34 : x
  2. Step 2: Convert to fraction form
    10,390.19/15,581.79 = 3,368.34/x
  3. Step 3: Cross multiply
    10,390.19x = 15,581.79 × 3,368.34
  4. Step 4: Simplify right side
    10,390.19x = 52,484,766.53
  5. Step 5: Solve for x
    x = 52,484,766.53/10,390.19
  6. Step 6: Final answer
    x = 5,051.38

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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.