Home / 20,642.37-28,493.74-12,258.81

Finding the Fourth Proportional to 20,642.37, 28,493.74 and 12,258.81

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Solution

The fourth proportional to 20,642.37, 28,493.74 and 12,258.81 is: 16,921.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,642.37 : 28,493.74 = 12,258.81 : x
  2. Step 2: Convert to fraction form
    20,642.37/28,493.74 = 12,258.81/x
  3. Step 3: Cross multiply
    20,642.37x = 28,493.74 × 12,258.81
  4. Step 4: Simplify right side
    20,642.37x = 349,299,344.85
  5. Step 5: Solve for x
    x = 349,299,344.85/20,642.37
  6. Step 6: Final answer
    x = 16,921.47

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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.