Home / 19,489.18-26,896.64-10,990.86

Finding the Fourth Proportional to 19,489.18, 26,896.64 and 10,990.86

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Solution

The fourth proportional to 19,489.18, 26,896.64 and 10,990.86 is: 15,168.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,489.18 : 26,896.64 = 10,990.86 : x
  2. Step 2: Convert to fraction form
    19,489.18/26,896.64 = 10,990.86/x
  3. Step 3: Cross multiply
    19,489.18x = 26,896.64 × 10,990.86
  4. Step 4: Simplify right side
    19,489.18x = 295,617,204.71
  5. Step 5: Solve for x
    x = 295,617,204.71/19,489.18
  6. Step 6: Final answer
    x = 15,168.27

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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.