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Finding the Fourth Proportional to 18,293.21, 25,244.63 and 9,909.71

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Solution

The fourth proportional to 18,293.21, 25,244.63 and 9,909.71 is: 13,675.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,293.21 : 25,244.63 = 9,909.71 : x
  2. Step 2: Convert to fraction form
    18,293.21/25,244.63 = 9,909.71/x
  3. Step 3: Cross multiply
    18,293.21x = 25,244.63 × 9,909.71
  4. Step 4: Simplify right side
    18,293.21x = 250,166,962.36
  5. Step 5: Solve for x
    x = 250,166,962.36/18,293.21
  6. Step 6: Final answer
    x = 13,675.40

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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.