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Finding the Fourth Proportional to 19,793.48, 29,690.40 and 7,952.72

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Solution

The fourth proportional to 19,793.48, 29,690.40 and 7,952.72 is: 11,929.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,793.48 : 29,690.40 = 7,952.72 : x
  2. Step 2: Convert to fraction form
    19,793.48/29,690.40 = 7,952.72/x
  3. Step 3: Cross multiply
    19,793.48x = 29,690.40 × 7,952.72
  4. Step 4: Simplify right side
    19,793.48x = 236,119,437.89
  5. Step 5: Solve for x
    x = 236,119,437.89/19,793.48
  6. Step 6: Final answer
    x = 11,929.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.