Home / 14,378.76-21,569-4,518.40

Finding the Fourth Proportional to 14,378.76, 21,569 and 4,518.40

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Solution

The fourth proportional to 14,378.76, 21,569 and 4,518.40 is: 6,777.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,378.76 : 21,569 = 4,518.40 : x
  2. Step 2: Convert to fraction form
    14,378.76/21,569 = 4,518.40/x
  3. Step 3: Cross multiply
    14,378.76x = 21,569 × 4,518.40
  4. Step 4: Simplify right side
    14,378.76x = 97,457,369.60
  5. Step 5: Solve for x
    x = 97,457,369.60/14,378.76
  6. Step 6: Final answer
    x = 6,777.87

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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.