Home / 13,403.49-18,497.66-7,739.28

Finding the Fourth Proportional to 13,403.49, 18,497.66 and 7,739.28

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Solution

The fourth proportional to 13,403.49, 18,497.66 and 7,739.28 is: 10,680.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,403.49 : 18,497.66 = 7,739.28 : x
  2. Step 2: Convert to fraction form
    13,403.49/18,497.66 = 7,739.28/x
  3. Step 3: Cross multiply
    13,403.49x = 18,497.66 × 7,739.28
  4. Step 4: Simplify right side
    13,403.49x = 143,158,570.08
  5. Step 5: Solve for x
    x = 143,158,570.08/13,403.49
  6. Step 6: Final answer
    x = 10,680.69

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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.