Home / 12,150.74-18,231.40-4,258.93

Finding the Fourth Proportional to 12,150.74, 18,231.40 and 4,258.93

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Solution

The fourth proportional to 12,150.74, 18,231.40 and 4,258.93 is: 6,390.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,150.74 : 18,231.40 = 4,258.93 : x
  2. Step 2: Convert to fraction form
    12,150.74/18,231.40 = 4,258.93/x
  3. Step 3: Cross multiply
    12,150.74x = 18,231.40 × 4,258.93
  4. Step 4: Simplify right side
    12,150.74x = 77,646,256.40
  5. Step 5: Solve for x
    x = 77,646,256.40/12,150.74
  6. Step 6: Final answer
    x = 6,390.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.