Home / 18,639.36-25,719.12-10,681.92

Finding the Fourth Proportional to 18,639.36, 25,719.12 and 10,681.92

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Solution

The fourth proportional to 18,639.36, 25,719.12 and 10,681.92 is: 14,739.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,639.36 : 25,719.12 = 10,681.92 : x
  2. Step 2: Convert to fraction form
    18,639.36/25,719.12 = 10,681.92/x
  3. Step 3: Cross multiply
    18,639.36x = 25,719.12 × 10,681.92
  4. Step 4: Simplify right side
    18,639.36x = 274,729,582.31
  5. Step 5: Solve for x
    x = 274,729,582.31/18,639.36
  6. Step 6: Final answer
    x = 14,739.22

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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.