Home / 18,429.67-25,431.64-10,875.61

Finding the Fourth Proportional to 18,429.67, 25,431.64 and 10,875.61

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Solution

The fourth proportional to 18,429.67, 25,431.64 and 10,875.61 is: 15,007.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,429.67 : 25,431.64 = 10,875.61 : x
  2. Step 2: Convert to fraction form
    18,429.67/25,431.64 = 10,875.61/x
  3. Step 3: Cross multiply
    18,429.67x = 25,431.64 × 10,875.61
  4. Step 4: Simplify right side
    18,429.67x = 276,584,598.30
  5. Step 5: Solve for x
    x = 276,584,598.30/18,429.67
  6. Step 6: Final answer
    x = 15,007.57

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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.