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Finding the Fourth Proportional to 19,209.42, 26,507.79 and 10,712.79

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Solution

The fourth proportional to 19,209.42, 26,507.79 and 10,712.79 is: 14,782.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,209.42 : 26,507.79 = 10,712.79 : x
  2. Step 2: Convert to fraction form
    19,209.42/26,507.79 = 10,712.79/x
  3. Step 3: Cross multiply
    19,209.42x = 26,507.79 × 10,712.79
  4. Step 4: Simplify right side
    19,209.42x = 283,972,387.63
  5. Step 5: Solve for x
    x = 283,972,387.63/19,209.42
  6. Step 6: Final answer
    x = 14,782.98

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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.