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Finding the Fourth Proportional to 13,645.71, 20,468.57 and 4,880.10

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Solution

The fourth proportional to 13,645.71, 20,468.57 and 4,880.10 is: 7,320.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,645.71 : 20,468.57 = 4,880.10 : x
  2. Step 2: Convert to fraction form
    13,645.71/20,468.57 = 4,880.10/x
  3. Step 3: Cross multiply
    13,645.71x = 20,468.57 × 4,880.10
  4. Step 4: Simplify right side
    13,645.71x = 99,888,644.06
  5. Step 5: Solve for x
    x = 99,888,644.06/13,645.71
  6. Step 6: Final answer
    x = 7,320.15

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1.5x scale

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.