Home / 22,308.15-30,786.81-12,749.45

Finding the Fourth Proportional to 22,308.15, 30,786.81 and 12,749.45

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Solution

The fourth proportional to 22,308.15, 30,786.81 and 12,749.45 is: 17,595.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,308.15 : 30,786.81 = 12,749.45 : x
  2. Step 2: Convert to fraction form
    22,308.15/30,786.81 = 12,749.45/x
  3. Step 3: Cross multiply
    22,308.15x = 30,786.81 × 12,749.45
  4. Step 4: Simplify right side
    22,308.15x = 392,514,740.82
  5. Step 5: Solve for x
    x = 392,514,740.82/22,308.15
  6. Step 6: Final answer
    x = 17,595.13

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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.