Home / 13,865.86-19,135.66-9,146.80

Finding the Fourth Proportional to 13,865.86, 19,135.66 and 9,146.80

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Solution

The fourth proportional to 13,865.86, 19,135.66 and 9,146.80 is: 12,623.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,865.86 : 19,135.66 = 9,146.80 : x
  2. Step 2: Convert to fraction form
    13,865.86/19,135.66 = 9,146.80/x
  3. Step 3: Cross multiply
    13,865.86x = 19,135.66 × 9,146.80
  4. Step 4: Simplify right side
    13,865.86x = 175,030,054.89
  5. Step 5: Solve for x
    x = 175,030,054.89/13,865.86
  6. Step 6: Final answer
    x = 12,623.09

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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.