Home / 18,372.27-25,353.57-9,988.77

Finding the Fourth Proportional to 18,372.27, 25,353.57 and 9,988.77

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Solution

The fourth proportional to 18,372.27, 25,353.57 and 9,988.77 is: 13,784.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,372.27 : 25,353.57 = 9,988.77 : x
  2. Step 2: Convert to fraction form
    18,372.27/25,353.57 = 9,988.77/x
  3. Step 3: Cross multiply
    18,372.27x = 25,353.57 × 9,988.77
  4. Step 4: Simplify right side
    18,372.27x = 253,250,979.41
  5. Step 5: Solve for x
    x = 253,250,979.41/18,372.27
  6. Step 6: Final answer
    x = 13,784.41

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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.