Home / 43,271.15-64,912.80-13,685.90

Finding the Fourth Proportional to 43,271.15, 64,912.80 and 13,685.90

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Solution

The fourth proportional to 43,271.15, 64,912.80 and 13,685.90 is: 20,530.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,271.15 : 64,912.80 = 13,685.90 : x
  2. Step 2: Convert to fraction form
    43,271.15/64,912.80 = 13,685.90/x
  3. Step 3: Cross multiply
    43,271.15x = 64,912.80 × 13,685.90
  4. Step 4: Simplify right side
    43,271.15x = 888,390,089.52
  5. Step 5: Solve for x
    x = 888,390,089.52/43,271.15
  6. Step 6: Final answer
    x = 20,530.77

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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.