Home / 18,372.36-25,353.72-9,988.86

Finding the Fourth Proportional to 18,372.36, 25,353.72 and 9,988.86

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Solution

The fourth proportional to 18,372.36, 25,353.72 and 9,988.86 is: 13,784.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,372.36 : 25,353.72 = 9,988.86 : x
  2. Step 2: Convert to fraction form
    18,372.36/25,353.72 = 9,988.86/x
  3. Step 3: Cross multiply
    18,372.36x = 25,353.72 × 9,988.86
  4. Step 4: Simplify right side
    18,372.36x = 253,254,759.56
  5. Step 5: Solve for x
    x = 253,254,759.56/18,372.36
  6. Step 6: Final answer
    x = 13,784.55

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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.