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Finding the Fourth Proportional to 19,363.65, 29,009.03 and 9,971.70

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Solution

The fourth proportional to 19,363.65, 29,009.03 and 9,971.70 is: 14,938.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,363.65 : 29,009.03 = 9,971.70 : x
  2. Step 2: Convert to fraction form
    19,363.65/29,009.03 = 9,971.70/x
  3. Step 3: Cross multiply
    19,363.65x = 29,009.03 × 9,971.70
  4. Step 4: Simplify right side
    19,363.65x = 289,269,294.59
  5. Step 5: Solve for x
    x = 289,269,294.59/19,363.65
  6. Step 6: Final answer
    x = 14,938.78

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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.