Home / 45,005.78-67,508.64-11,725.76

Finding the Fourth Proportional to 45,005.78, 67,508.64 and 11,725.76

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Solution

The fourth proportional to 45,005.78, 67,508.64 and 11,725.76 is: 17,588.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,005.78 : 67,508.64 = 11,725.76 : x
  2. Step 2: Convert to fraction form
    45,005.78/67,508.64 = 11,725.76/x
  3. Step 3: Cross multiply
    45,005.78x = 67,508.64 × 11,725.76
  4. Step 4: Simplify right side
    45,005.78x = 791,590,279.34
  5. Step 5: Solve for x
    x = 791,590,279.34/45,005.78
  6. Step 6: Final answer
    x = 17,588.64

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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.