Home / 13,868.18-20,802.28-3,479.94

Finding the Fourth Proportional to 13,868.18, 20,802.28 and 3,479.94

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Solution

The fourth proportional to 13,868.18, 20,802.28 and 3,479.94 is: 5,219.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,868.18 : 20,802.28 = 3,479.94 : x
  2. Step 2: Convert to fraction form
    13,868.18/20,802.28 = 3,479.94/x
  3. Step 3: Cross multiply
    13,868.18x = 20,802.28 × 3,479.94
  4. Step 4: Simplify right side
    13,868.18x = 72,390,686.26
  5. Step 5: Solve for x
    x = 72,390,686.26/13,868.18
  6. Step 6: Final answer
    x = 5,219.91

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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.