Home / 14,130.36-19,499.94-7,842.78

Finding the Fourth Proportional to 14,130.36, 19,499.94 and 7,842.78

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Solution

The fourth proportional to 14,130.36, 19,499.94 and 7,842.78 is: 10,823.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,130.36 : 19,499.94 = 7,842.78 : x
  2. Step 2: Convert to fraction form
    14,130.36/19,499.94 = 7,842.78/x
  3. Step 3: Cross multiply
    14,130.36x = 19,499.94 × 7,842.78
  4. Step 4: Simplify right side
    14,130.36x = 152,933,739.43
  5. Step 5: Solve for x
    x = 152,933,739.43/14,130.36
  6. Step 6: Final answer
    x = 10,823.06

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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.