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Finding the Fourth Proportional to 19,701.70, 27,134.40 and 19,337.20

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Solution

The fourth proportional to 19,701.70, 27,134.40 and 19,337.20 is: 26,632.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,701.70 : 27,134.40 = 19,337.20 : x
  2. Step 2: Convert to fraction form
    19,701.70/27,134.40 = 19,337.20/x
  3. Step 3: Cross multiply
    19,701.70x = 27,134.40 × 19,337.20
  4. Step 4: Simplify right side
    19,701.70x = 524,703,319.68
  5. Step 5: Solve for x
    x = 524,703,319.68/19,701.70
  6. Step 6: Final answer
    x = 26,632.39

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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.