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Finding the Fourth Proportional to 19,934.20, 29,903.46 and 7,460.20

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Solution

The fourth proportional to 19,934.20, 29,903.46 and 7,460.20 is: 11,191.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,934.20 : 29,903.46 = 7,460.20 : x
  2. Step 2: Convert to fraction form
    19,934.20/29,903.46 = 7,460.20/x
  3. Step 3: Cross multiply
    19,934.20x = 29,903.46 × 7,460.20
  4. Step 4: Simplify right side
    19,934.20x = 223,085,792.29
  5. Step 5: Solve for x
    x = 223,085,792.29/19,934.20
  6. Step 6: Final answer
    x = 11,191.11

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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.