Home / 13,219.11-19,831.71-7,677.09

Finding the Fourth Proportional to 13,219.11, 19,831.71 and 7,677.09

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Solution

The fourth proportional to 13,219.11, 19,831.71 and 7,677.09 is: 11,517.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,219.11 : 19,831.71 = 7,677.09 : x
  2. Step 2: Convert to fraction form
    13,219.11/19,831.71 = 7,677.09/x
  3. Step 3: Cross multiply
    13,219.11x = 19,831.71 × 7,677.09
  4. Step 4: Simplify right side
    13,219.11x = 152,249,822.52
  5. Step 5: Solve for x
    x = 152,249,822.52/13,219.11
  6. Step 6: Final answer
    x = 11,517.40

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1.5x scale

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.