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Finding the Fourth Proportional to 19,959.30, 29,944.16 and 7,479.51

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Solution

The fourth proportional to 19,959.30, 29,944.16 and 7,479.51 is: 11,221.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,959.30 : 29,944.16 = 7,479.51 : x
  2. Step 2: Convert to fraction form
    19,959.30/29,944.16 = 7,479.51/x
  3. Step 3: Cross multiply
    19,959.30x = 29,944.16 × 7,479.51
  4. Step 4: Simplify right side
    19,959.30x = 223,967,606.76
  5. Step 5: Solve for x
    x = 223,967,606.76/19,959.30
  6. Step 6: Final answer
    x = 11,221.22

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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.