Home / 28,469.70-42,730.68-14,439.50

Finding the Fourth Proportional to 28,469.70, 42,730.68 and 14,439.50

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Solution

The fourth proportional to 28,469.70, 42,730.68 and 14,439.50 is: 21,672.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,469.70 : 42,730.68 = 14,439.50 : x
  2. Step 2: Convert to fraction form
    28,469.70/42,730.68 = 14,439.50/x
  3. Step 3: Cross multiply
    28,469.70x = 42,730.68 × 14,439.50
  4. Step 4: Simplify right side
    28,469.70x = 617,009,440.21
  5. Step 5: Solve for x
    x = 617,009,440.21/28,469.70
  6. Step 6: Final answer
    x = 21,672.50

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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.