Home / 43,686.40-65,529.60-18,722.20

Finding the Fourth Proportional to 43,686.40, 65,529.60 and 18,722.20

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Solution

The fourth proportional to 43,686.40, 65,529.60 and 18,722.20 is: 28,083.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,686.40 : 65,529.60 = 18,722.20 : x
  2. Step 2: Convert to fraction form
    43,686.40/65,529.60 = 18,722.20/x
  3. Step 3: Cross multiply
    43,686.40x = 65,529.60 × 18,722.20
  4. Step 4: Simplify right side
    43,686.40x = 1,226,858,277.12
  5. Step 5: Solve for x
    x = 1,226,858,277.12/43,686.40
  6. Step 6: Final answer
    x = 28,083.30

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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.