Home / 19,215.18-26,520.57-10,831.68

Finding the Fourth Proportional to 19,215.18, 26,520.57 and 10,831.68

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Solution

The fourth proportional to 19,215.18, 26,520.57 and 10,831.68 is: 14,949.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,215.18 : 26,520.57 = 10,831.68 : x
  2. Step 2: Convert to fraction form
    19,215.18/26,520.57 = 10,831.68/x
  3. Step 3: Cross multiply
    19,215.18x = 26,520.57 × 10,831.68
  4. Step 4: Simplify right side
    19,215.18x = 287,262,327.66
  5. Step 5: Solve for x
    x = 287,262,327.66/19,215.18
  6. Step 6: Final answer
    x = 14,949.76

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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.