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Finding the Fourth Proportional to 19,097.64, 26,342.01 and 12,390.84

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Solution

The fourth proportional to 19,097.64, 26,342.01 and 12,390.84 is: 17,091.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,097.64 : 26,342.01 = 12,390.84 : x
  2. Step 2: Convert to fraction form
    19,097.64/26,342.01 = 12,390.84/x
  3. Step 3: Cross multiply
    19,097.64x = 26,342.01 × 12,390.84
  4. Step 4: Simplify right side
    19,097.64x = 326,399,631.19
  5. Step 5: Solve for x
    x = 326,399,631.19/19,097.64
  6. Step 6: Final answer
    x = 17,091.10

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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.