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Finding the Fourth Proportional to 13,071.60, 19,578.60 and 5,276.40

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Solution

The fourth proportional to 13,071.60, 19,578.60 and 5,276.40 is: 7,902.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,071.60 : 19,578.60 = 5,276.40 : x
  2. Step 2: Convert to fraction form
    13,071.60/19,578.60 = 5,276.40/x
  3. Step 3: Cross multiply
    13,071.60x = 19,578.60 × 5,276.40
  4. Step 4: Simplify right side
    13,071.60x = 103,304,525.04
  5. Step 5: Solve for x
    x = 103,304,525.04/13,071.60
  6. Step 6: Final answer
    x = 7,902.97

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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.