Home / 43,020.36-64,532.40-13,438.76

Finding the Fourth Proportional to 43,020.36, 64,532.40 and 13,438.76

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Solution

The fourth proportional to 43,020.36, 64,532.40 and 13,438.76 is: 20,158.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,020.36 : 64,532.40 = 13,438.76 : x
  2. Step 2: Convert to fraction form
    43,020.36/64,532.40 = 13,438.76/x
  3. Step 3: Cross multiply
    43,020.36x = 64,532.40 × 13,438.76
  4. Step 4: Simplify right side
    43,020.36x = 867,235,435.82
  5. Step 5: Solve for x
    x = 867,235,435.82/43,020.36
  6. Step 6: Final answer
    x = 20,158.72

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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.