Home / 13,078.65-18,048.66-7,110.33

Finding the Fourth Proportional to 13,078.65, 18,048.66 and 7,110.33

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Solution

The fourth proportional to 13,078.65, 18,048.66 and 7,110.33 is: 9,812.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,078.65 : 18,048.66 = 7,110.33 : x
  2. Step 2: Convert to fraction form
    13,078.65/18,048.66 = 7,110.33/x
  3. Step 3: Cross multiply
    13,078.65x = 18,048.66 × 7,110.33
  4. Step 4: Simplify right side
    13,078.65x = 128,331,834.31
  5. Step 5: Solve for x
    x = 128,331,834.31/13,078.65
  6. Step 6: Final answer
    x = 9,812.31

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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.