Home / 43,279.40-64,920.72-12,113.84

Finding the Fourth Proportional to 43,279.40, 64,920.72 and 12,113.84

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Solution

The fourth proportional to 43,279.40, 64,920.72 and 12,113.84 is: 18,171.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,279.40 : 64,920.72 = 12,113.84 : x
  2. Step 2: Convert to fraction form
    43,279.40/64,920.72 = 12,113.84/x
  3. Step 3: Cross multiply
    43,279.40x = 64,920.72 × 12,113.84
  4. Step 4: Simplify right side
    43,279.40x = 786,439,214.76
  5. Step 5: Solve for x
    x = 786,439,214.76/43,279.40
  6. Step 6: Final answer
    x = 18,171.21

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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.