Home / 12,944.81-19,417.21-7,138.32

Finding the Fourth Proportional to 12,944.81, 19,417.21 and 7,138.32

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Solution

The fourth proportional to 12,944.81, 19,417.21 and 7,138.32 is: 10,707.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,944.81 : 19,417.21 = 7,138.32 : x
  2. Step 2: Convert to fraction form
    12,944.81/19,417.21 = 7,138.32/x
  3. Step 3: Cross multiply
    12,944.81x = 19,417.21 × 7,138.32
  4. Step 4: Simplify right side
    12,944.81x = 138,606,258.49
  5. Step 5: Solve for x
    x = 138,606,258.49/12,944.81
  6. Step 6: Final answer
    x = 10,707.48

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Double scale
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Similar ratio
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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.