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Finding the Fourth Proportional to 19,151.60, 28,750.80 and 10,837.40

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Solution

The fourth proportional to 19,151.60, 28,750.80 and 10,837.40 is: 16,269.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,151.60 : 28,750.80 = 10,837.40 : x
  2. Step 2: Convert to fraction form
    19,151.60/28,750.80 = 10,837.40/x
  3. Step 3: Cross multiply
    19,151.60x = 28,750.80 × 10,837.40
  4. Step 4: Simplify right side
    19,151.60x = 311,583,919.92
  5. Step 5: Solve for x
    x = 311,583,919.92/19,151.60
  6. Step 6: Final answer
    x = 16,269.34

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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.