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Finding the Fourth Proportional to 19,009.60, 28,546.80 and 13,501.60

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Solution

The fourth proportional to 19,009.60, 28,546.80 and 13,501.60 is: 20,275.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,009.60 : 28,546.80 = 13,501.60 : x
  2. Step 2: Convert to fraction form
    19,009.60/28,546.80 = 13,501.60/x
  3. Step 3: Cross multiply
    19,009.60x = 28,546.80 × 13,501.60
  4. Step 4: Simplify right side
    19,009.60x = 385,427,474.88
  5. Step 5: Solve for x
    x = 385,427,474.88/19,009.60
  6. Step 6: Final answer
    x = 20,275.41

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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.