Home / 13,578.93-18,739.67-7,612.53

Finding the Fourth Proportional to 13,578.93, 18,739.67 and 7,612.53

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Solution

The fourth proportional to 13,578.93, 18,739.67 and 7,612.53 is: 10,505.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,578.93 : 18,739.67 = 7,612.53 : x
  2. Step 2: Convert to fraction form
    13,578.93/18,739.67 = 7,612.53/x
  3. Step 3: Cross multiply
    13,578.93x = 18,739.67 × 7,612.53
  4. Step 4: Simplify right side
    13,578.93x = 142,656,300.07
  5. Step 5: Solve for x
    x = 142,656,300.07/13,578.93
  6. Step 6: Final answer
    x = 10,505.71

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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.