Home / 28,715.45-43,070.84-18,154.67

Finding the Fourth Proportional to 28,715.45, 43,070.84 and 18,154.67

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Solution

The fourth proportional to 28,715.45, 43,070.84 and 18,154.67 is: 27,230.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,715.45 : 43,070.84 = 18,154.67 : x
  2. Step 2: Convert to fraction form
    28,715.45/43,070.84 = 18,154.67/x
  3. Step 3: Cross multiply
    28,715.45x = 43,070.84 × 18,154.67
  4. Step 4: Simplify right side
    28,715.45x = 781,936,580.70
  5. Step 5: Solve for x
    x = 781,936,580.70/28,715.45
  6. Step 6: Final answer
    x = 27,230.52

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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.