Home / 28,981.50-43,472.25-8,205

Finding the Fourth Proportional to 28,981.50, 43,472.25 and 8,205

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Solution

The fourth proportional to 28,981.50, 43,472.25 and 8,205 is: 12,307.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,981.50 : 43,472.25 = 8,205 : x
  2. Step 2: Convert to fraction form
    28,981.50/43,472.25 = 8,205/x
  3. Step 3: Cross multiply
    28,981.50x = 43,472.25 × 8,205
  4. Step 4: Simplify right side
    28,981.50x = 356,689,811.25
  5. Step 5: Solve for x
    x = 356,689,811.25/28,981.50
  6. Step 6: Final answer
    x = 12,307.50

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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.