Home / 39,588.02-54,631.56-21,438.96

Finding the Fourth Proportional to 39,588.02, 54,631.56 and 21,438.96

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Solution

The fourth proportional to 39,588.02, 54,631.56 and 21,438.96 is: 29,585.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,588.02 : 54,631.56 = 21,438.96 : x
  2. Step 2: Convert to fraction form
    39,588.02/54,631.56 = 21,438.96/x
  3. Step 3: Cross multiply
    39,588.02x = 54,631.56 × 21,438.96
  4. Step 4: Simplify right side
    39,588.02x = 1,171,243,829.58
  5. Step 5: Solve for x
    x = 1,171,243,829.58/39,588.02
  6. Step 6: Final answer
    x = 29,585.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.