Home / 13,976.08-19,287.12-7,688.48

Finding the Fourth Proportional to 13,976.08, 19,287.12 and 7,688.48

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Solution

The fourth proportional to 13,976.08, 19,287.12 and 7,688.48 is: 10,610.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,976.08 : 19,287.12 = 7,688.48 : x
  2. Step 2: Convert to fraction form
    13,976.08/19,287.12 = 7,688.48/x
  3. Step 3: Cross multiply
    13,976.08x = 19,287.12 × 7,688.48
  4. Step 4: Simplify right side
    13,976.08x = 148,288,636.38
  5. Step 5: Solve for x
    x = 148,288,636.38/13,976.08
  6. Step 6: Final answer
    x = 10,610.17

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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.