Home / 28,004.50-42,006.72-19,212.76

Finding the Fourth Proportional to 28,004.50, 42,006.72 and 19,212.76

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Solution

The fourth proportional to 28,004.50, 42,006.72 and 19,212.76 is: 28,819.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,004.50 : 42,006.72 = 19,212.76 : x
  2. Step 2: Convert to fraction form
    28,004.50/42,006.72 = 19,212.76/x
  3. Step 3: Cross multiply
    28,004.50x = 42,006.72 × 19,212.76
  4. Step 4: Simplify right side
    28,004.50x = 807,065,029.75
  5. Step 5: Solve for x
    x = 807,065,029.75/28,004.50
  6. Step 6: Final answer
    x = 28,819.12

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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.