Home / 18,715.36-25,831.54-12,343.11

Finding the Fourth Proportional to 18,715.36, 25,831.54 and 12,343.11

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Solution

The fourth proportional to 18,715.36, 25,831.54 and 12,343.11 is: 17,036.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,715.36 : 25,831.54 = 12,343.11 : x
  2. Step 2: Convert to fraction form
    18,715.36/25,831.54 = 12,343.11/x
  3. Step 3: Cross multiply
    18,715.36x = 25,831.54 × 12,343.11
  4. Step 4: Simplify right side
    18,715.36x = 318,841,539.69
  5. Step 5: Solve for x
    x = 318,841,539.69/18,715.36
  6. Step 6: Final answer
    x = 17,036.36

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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.