Home / 43,477.68-65,217.12-12,312.90

Finding the Fourth Proportional to 43,477.68, 65,217.12 and 12,312.90

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Solution

The fourth proportional to 43,477.68, 65,217.12 and 12,312.90 is: 18,469.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,477.68 : 65,217.12 = 12,312.90 : x
  2. Step 2: Convert to fraction form
    43,477.68/65,217.12 = 12,312.90/x
  3. Step 3: Cross multiply
    43,477.68x = 65,217.12 × 12,312.90
  4. Step 4: Simplify right side
    43,477.68x = 803,011,876.85
  5. Step 5: Solve for x
    x = 803,011,876.85/43,477.68
  6. Step 6: Final answer
    x = 18,469.52

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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.