Home / 13,645.90-18,831.14-7,677.58

Finding the Fourth Proportional to 13,645.90, 18,831.14 and 7,677.58

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Solution

The fourth proportional to 13,645.90, 18,831.14 and 7,677.58 is: 10,594.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,645.90 : 18,831.14 = 7,677.58 : x
  2. Step 2: Convert to fraction form
    13,645.90/18,831.14 = 7,677.58/x
  3. Step 3: Cross multiply
    13,645.90x = 18,831.14 × 7,677.58
  4. Step 4: Simplify right side
    13,645.90x = 144,577,583.84
  5. Step 5: Solve for x
    x = 144,577,583.84/13,645.90
  6. Step 6: Final answer
    x = 10,594.95

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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.