Home / 13,273.86-18,319.70-12,152.78

Finding the Fourth Proportional to 13,273.86, 18,319.70 and 12,152.78

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Solution

The fourth proportional to 13,273.86, 18,319.70 and 12,152.78 is: 16,772.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,273.86 : 18,319.70 = 12,152.78 : x
  2. Step 2: Convert to fraction form
    13,273.86/18,319.70 = 12,152.78/x
  3. Step 3: Cross multiply
    13,273.86x = 18,319.70 × 12,152.78
  4. Step 4: Simplify right side
    13,273.86x = 222,635,283.77
  5. Step 5: Solve for x
    x = 222,635,283.77/13,273.86
  6. Step 6: Final answer
    x = 16,772.46

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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.