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Finding the Fourth Proportional to 19,658.88, 27,102.72 and 19,047.36

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Solution

The fourth proportional to 19,658.88, 27,102.72 and 19,047.36 is: 26,259.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,658.88 : 27,102.72 = 19,047.36 : x
  2. Step 2: Convert to fraction form
    19,658.88/27,102.72 = 19,047.36/x
  3. Step 3: Cross multiply
    19,658.88x = 27,102.72 × 19,047.36
  4. Step 4: Simplify right side
    19,658.88x = 516,235,264.82
  5. Step 5: Solve for x
    x = 516,235,264.82/19,658.88
  6. Step 6: Final answer
    x = 26,259.65

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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.