Home / 20,509.61-28,302.82-12,010.68

Finding the Fourth Proportional to 20,509.61, 28,302.82 and 12,010.68

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Solution

The fourth proportional to 20,509.61, 28,302.82 and 12,010.68 is: 16,574.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,509.61 : 28,302.82 = 12,010.68 : x
  2. Step 2: Convert to fraction form
    20,509.61/28,302.82 = 12,010.68/x
  3. Step 3: Cross multiply
    20,509.61x = 28,302.82 × 12,010.68
  4. Step 4: Simplify right side
    20,509.61x = 339,936,084.09
  5. Step 5: Solve for x
    x = 339,936,084.09/20,509.61
  6. Step 6: Final answer
    x = 16,574.48

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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.