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Finding the Fourth Proportional to 19,507.93, 26,921.07 and 11,439.94

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Solution

The fourth proportional to 19,507.93, 26,921.07 and 11,439.94 is: 15,787.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,507.93 : 26,921.07 = 11,439.94 : x
  2. Step 2: Convert to fraction form
    19,507.93/26,921.07 = 11,439.94/x
  3. Step 3: Cross multiply
    19,507.93x = 26,921.07 × 11,439.94
  4. Step 4: Simplify right side
    19,507.93x = 307,975,368.34
  5. Step 5: Solve for x
    x = 307,975,368.34/19,507.93
  6. Step 6: Final answer
    x = 15,787.19

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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.