Home / 26,919.81-40,281.30-15,831.72

Finding the Fourth Proportional to 26,919.81, 40,281.30 and 15,831.72

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Solution

The fourth proportional to 26,919.81, 40,281.30 and 15,831.72 is: 23,689.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,919.81 : 40,281.30 = 15,831.72 : x
  2. Step 2: Convert to fraction form
    26,919.81/40,281.30 = 15,831.72/x
  3. Step 3: Cross multiply
    26,919.81x = 40,281.30 × 15,831.72
  4. Step 4: Simplify right side
    26,919.81x = 637,722,262.84
  5. Step 5: Solve for x
    x = 637,722,262.84/26,919.81
  6. Step 6: Final answer
    x = 23,689.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.