Home / 43,005.40-64,511.15-11,415.21

Finding the Fourth Proportional to 43,005.40, 64,511.15 and 11,415.21

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Solution

The fourth proportional to 43,005.40, 64,511.15 and 11,415.21 is: 17,123.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,005.40 : 64,511.15 = 11,415.21 : x
  2. Step 2: Convert to fraction form
    43,005.40/64,511.15 = 11,415.21/x
  3. Step 3: Cross multiply
    43,005.40x = 64,511.15 × 11,415.21
  4. Step 4: Simplify right side
    43,005.40x = 736,408,324.59
  5. Step 5: Solve for x
    x = 736,408,324.59/43,005.40
  6. Step 6: Final answer
    x = 17,123.62

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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.