Home / 43,686.80-65,518.20-12,089.36

Finding the Fourth Proportional to 43,686.80, 65,518.20 and 12,089.36

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Solution

The fourth proportional to 43,686.80, 65,518.20 and 12,089.36 is: 18,130.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,686.80 : 65,518.20 = 12,089.36 : x
  2. Step 2: Convert to fraction form
    43,686.80/65,518.20 = 12,089.36/x
  3. Step 3: Cross multiply
    43,686.80x = 65,518.20 × 12,089.36
  4. Step 4: Simplify right side
    43,686.80x = 792,073,106.35
  5. Step 5: Solve for x
    x = 792,073,106.35/43,686.80
  6. Step 6: Final answer
    x = 18,130.72

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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.