Home / 13,831.28-19,087.13-7,543.66

Finding the Fourth Proportional to 13,831.28, 19,087.13 and 7,543.66

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Solution

The fourth proportional to 13,831.28, 19,087.13 and 7,543.66 is: 10,410.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,831.28 : 19,087.13 = 7,543.66 : x
  2. Step 2: Convert to fraction form
    13,831.28/19,087.13 = 7,543.66/x
  3. Step 3: Cross multiply
    13,831.28x = 19,087.13 × 7,543.66
  4. Step 4: Simplify right side
    13,831.28x = 143,986,790.24
  5. Step 5: Solve for x
    x = 143,986,790.24/13,831.28
  6. Step 6: Final answer
    x = 10,410.23

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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.