Home / 19,218.18-28,831.74-7,531.50

Finding the Fourth Proportional to 19,218.18, 28,831.74 and 7,531.50

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Solution

The fourth proportional to 19,218.18, 28,831.74 and 7,531.50 is: 11,299.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,218.18 : 28,831.74 = 7,531.50 : x
  2. Step 2: Convert to fraction form
    19,218.18/28,831.74 = 7,531.50/x
  3. Step 3: Cross multiply
    19,218.18x = 28,831.74 × 7,531.50
  4. Step 4: Simplify right side
    19,218.18x = 217,146,249.81
  5. Step 5: Solve for x
    x = 217,146,249.81/19,218.18
  6. Step 6: Final answer
    x = 11,299.00

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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.