Home / 15,366.09-21,211.15-12,009.98

Finding the Fourth Proportional to 15,366.09, 21,211.15 and 12,009.98

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Solution

The fourth proportional to 15,366.09, 21,211.15 and 12,009.98 is: 16,578.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,366.09 : 21,211.15 = 12,009.98 : x
  2. Step 2: Convert to fraction form
    15,366.09/21,211.15 = 12,009.98/x
  3. Step 3: Cross multiply
    15,366.09x = 21,211.15 × 12,009.98
  4. Step 4: Simplify right side
    15,366.09x = 254,745,487.28
  5. Step 5: Solve for x
    x = 254,745,487.28/15,366.09
  6. Step 6: Final answer
    x = 16,578.42

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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.