Home / 20,509.20-28,300.98-12,010.17

Finding the Fourth Proportional to 20,509.20, 28,300.98 and 12,010.17

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Solution

The fourth proportional to 20,509.20, 28,300.98 and 12,010.17 is: 16,573.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,509.20 : 28,300.98 = 12,010.17 : x
  2. Step 2: Convert to fraction form
    20,509.20/28,300.98 = 12,010.17/x
  3. Step 3: Cross multiply
    20,509.20x = 28,300.98 × 12,010.17
  4. Step 4: Simplify right side
    20,509.20x = 339,899,580.97
  5. Step 5: Solve for x
    x = 339,899,580.97/20,509.20
  6. Step 6: Final answer
    x = 16,573.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.