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Finding the Fourth Proportional to 13,152.60, 19,700.10 and 12,864.60

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Solution

The fourth proportional to 13,152.60, 19,700.10 and 12,864.60 is: 19,268.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,152.60 : 19,700.10 = 12,864.60 : x
  2. Step 2: Convert to fraction form
    13,152.60/19,700.10 = 12,864.60/x
  3. Step 3: Cross multiply
    13,152.60x = 19,700.10 × 12,864.60
  4. Step 4: Simplify right side
    13,152.60x = 253,433,906.46
  5. Step 5: Solve for x
    x = 253,433,906.46/13,152.60
  6. Step 6: Final answer
    x = 19,268.73

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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.