Home / 12,260.39-16,921.05-7,157.57

Finding the Fourth Proportional to 12,260.39, 16,921.05 and 7,157.57

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Solution

The fourth proportional to 12,260.39, 16,921.05 and 7,157.57 is: 9,878.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,260.39 : 16,921.05 = 7,157.57 : x
  2. Step 2: Convert to fraction form
    12,260.39/16,921.05 = 7,157.57/x
  3. Step 3: Cross multiply
    12,260.39x = 16,921.05 × 7,157.57
  4. Step 4: Simplify right side
    12,260.39x = 121,113,707.43
  5. Step 5: Solve for x
    x = 121,113,707.43/12,260.39
  6. Step 6: Final answer
    x = 9,878.46

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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.