Home / 12,789.66-19,110.36-10,009.74

Finding the Fourth Proportional to 12,789.66, 19,110.36 and 10,009.74

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Solution

The fourth proportional to 12,789.66, 19,110.36 and 10,009.74 is: 14,956.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,789.66 : 19,110.36 = 10,009.74 : x
  2. Step 2: Convert to fraction form
    12,789.66/19,110.36 = 10,009.74/x
  3. Step 3: Cross multiply
    12,789.66x = 19,110.36 × 10,009.74
  4. Step 4: Simplify right side
    12,789.66x = 191,289,734.91
  5. Step 5: Solve for x
    x = 191,289,734.91/12,789.66
  6. Step 6: Final answer
    x = 14,956.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.