Home / 13,880.16-20,828.16-5,113.92

Finding the Fourth Proportional to 13,880.16, 20,828.16 and 5,113.92

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Solution

The fourth proportional to 13,880.16, 20,828.16 and 5,113.92 is: 7,673.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,880.16 : 20,828.16 = 5,113.92 : x
  2. Step 2: Convert to fraction form
    13,880.16/20,828.16 = 5,113.92/x
  3. Step 3: Cross multiply
    13,880.16x = 20,828.16 × 5,113.92
  4. Step 4: Simplify right side
    13,880.16x = 106,513,543.99
  5. Step 5: Solve for x
    x = 106,513,543.99/13,880.16
  6. Step 6: Final answer
    x = 7,673.80

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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.