Home / 15,858.45-21,884.59-9,144.05

Finding the Fourth Proportional to 15,858.45, 21,884.59 and 9,144.05

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Solution

The fourth proportional to 15,858.45, 21,884.59 and 9,144.05 is: 12,618.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,858.45 : 21,884.59 = 9,144.05 : x
  2. Step 2: Convert to fraction form
    15,858.45/21,884.59 = 9,144.05/x
  3. Step 3: Cross multiply
    15,858.45x = 21,884.59 × 9,144.05
  4. Step 4: Simplify right side
    15,858.45x = 200,113,785.19
  5. Step 5: Solve for x
    x = 200,113,785.19/15,858.45
  6. Step 6: Final answer
    x = 12,618.75

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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.