Home / 13,939.35-19,235.78-7,565.80

Finding the Fourth Proportional to 13,939.35, 19,235.78 and 7,565.80

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Solution

The fourth proportional to 13,939.35, 19,235.78 and 7,565.80 is: 10,440.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,939.35 : 19,235.78 = 7,565.80 : x
  2. Step 2: Convert to fraction form
    13,939.35/19,235.78 = 7,565.80/x
  3. Step 3: Cross multiply
    13,939.35x = 19,235.78 × 7,565.80
  4. Step 4: Simplify right side
    13,939.35x = 145,534,042.84
  5. Step 5: Solve for x
    x = 145,534,042.84/13,939.35
  6. Step 6: Final answer
    x = 10,440.52

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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.