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Finding the Fourth Proportional to 14,489.04, 19,994.80 and 7,865.04

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Solution

The fourth proportional to 14,489.04, 19,994.80 and 7,865.04 is: 10,853.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,489.04 : 19,994.80 = 7,865.04 : x
  2. Step 2: Convert to fraction form
    14,489.04/19,994.80 = 7,865.04/x
  3. Step 3: Cross multiply
    14,489.04x = 19,994.80 × 7,865.04
  4. Step 4: Simplify right side
    14,489.04x = 157,259,901.79
  5. Step 5: Solve for x
    x = 157,259,901.79/14,489.04
  6. Step 6: Final answer
    x = 10,853.71

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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.