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Finding the Fourth Proportional to 19,407.60, 26,794.72 and 13,754.32

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Solution

The fourth proportional to 19,407.60, 26,794.72 and 13,754.32 is: 18,989.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,407.60 : 26,794.72 = 13,754.32 : x
  2. Step 2: Convert to fraction form
    19,407.60/26,794.72 = 13,754.32/x
  3. Step 3: Cross multiply
    19,407.60x = 26,794.72 × 13,754.32
  4. Step 4: Simplify right side
    19,407.60x = 368,543,153.19
  5. Step 5: Solve for x
    x = 368,543,153.19/19,407.60
  6. Step 6: Final answer
    x = 18,989.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.