Home / 43,123.81-64,688.44-13,542.81

Finding the Fourth Proportional to 43,123.81, 64,688.44 and 13,542.81

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Solution

The fourth proportional to 43,123.81, 64,688.44 and 13,542.81 is: 20,315.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,123.81 : 64,688.44 = 13,542.81 : x
  2. Step 2: Convert to fraction form
    43,123.81/64,688.44 = 13,542.81/x
  3. Step 3: Cross multiply
    43,123.81x = 64,688.44 × 13,542.81
  4. Step 4: Simplify right side
    43,123.81x = 876,063,364.94
  5. Step 5: Solve for x
    x = 876,063,364.94/43,123.81
  6. Step 6: Final answer
    x = 20,315.07

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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.