Home / 13,403.86-18,498.17-7,739.65

Finding the Fourth Proportional to 13,403.86, 18,498.17 and 7,739.65

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Solution

The fourth proportional to 13,403.86, 18,498.17 and 7,739.65 is: 10,681.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,403.86 : 18,498.17 = 7,739.65 : x
  2. Step 2: Convert to fraction form
    13,403.86/18,498.17 = 7,739.65/x
  3. Step 3: Cross multiply
    13,403.86x = 18,498.17 × 7,739.65
  4. Step 4: Simplify right side
    13,403.86x = 143,169,361.44
  5. Step 5: Solve for x
    x = 143,169,361.44/13,403.86
  6. Step 6: Final answer
    x = 10,681.20

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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.