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Finding the Fourth Proportional to 13,157.60, 19,737.60 and 5,364.80

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Solution

The fourth proportional to 13,157.60, 19,737.60 and 5,364.80 is: 8,047.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,157.60 : 19,737.60 = 5,364.80 : x
  2. Step 2: Convert to fraction form
    13,157.60/19,737.60 = 5,364.80/x
  3. Step 3: Cross multiply
    13,157.60x = 19,737.60 × 5,364.80
  4. Step 4: Simplify right side
    13,157.60x = 105,888,276.48
  5. Step 5: Solve for x
    x = 105,888,276.48/13,157.60
  6. Step 6: Final answer
    x = 8,047.69

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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.