Home / 12,853.09-19,162.55-12,529.90

Finding the Fourth Proportional to 12,853.09, 19,162.55 and 12,529.90

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Solution

The fourth proportional to 12,853.09, 19,162.55 and 12,529.90 is: 18,680.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,853.09 : 19,162.55 = 12,529.90 : x
  2. Step 2: Convert to fraction form
    12,853.09/19,162.55 = 12,529.90/x
  3. Step 3: Cross multiply
    12,853.09x = 19,162.55 × 12,529.90
  4. Step 4: Simplify right side
    12,853.09x = 240,104,772.60
  5. Step 5: Solve for x
    x = 240,104,772.60/12,853.09
  6. Step 6: Final answer
    x = 18,680.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.