Home / 13,134.02-18,125.14-7,831.92

Finding the Fourth Proportional to 13,134.02, 18,125.14 and 7,831.92

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Solution

The fourth proportional to 13,134.02, 18,125.14 and 7,831.92 is: 10,808.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,134.02 : 18,125.14 = 7,831.92 : x
  2. Step 2: Convert to fraction form
    13,134.02/18,125.14 = 7,831.92/x
  3. Step 3: Cross multiply
    13,134.02x = 18,125.14 × 7,831.92
  4. Step 4: Simplify right side
    13,134.02x = 141,954,646.47
  5. Step 5: Solve for x
    x = 141,954,646.47/13,134.02
  6. Step 6: Final answer
    x = 10,808.16

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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.