Home / 18,345.12-25,316-9,961.60

Finding the Fourth Proportional to 18,345.12, 25,316 and 9,961.60

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Solution

The fourth proportional to 18,345.12, 25,316 and 9,961.60 is: 13,746.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,345.12 : 25,316 = 9,961.60 : x
  2. Step 2: Convert to fraction form
    18,345.12/25,316 = 9,961.60/x
  3. Step 3: Cross multiply
    18,345.12x = 25,316 × 9,961.60
  4. Step 4: Simplify right side
    18,345.12x = 252,187,865.60
  5. Step 5: Solve for x
    x = 252,187,865.60/18,345.12
  6. Step 6: Final answer
    x = 13,746.86

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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.