Home / 39,325.28-54,268.98-21,420.38

Finding the Fourth Proportional to 39,325.28, 54,268.98 and 21,420.38

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Solution

The fourth proportional to 39,325.28, 54,268.98 and 21,420.38 is: 29,560.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,325.28 : 54,268.98 = 21,420.38 : x
  2. Step 2: Convert to fraction form
    39,325.28/54,268.98 = 21,420.38/x
  3. Step 3: Cross multiply
    39,325.28x = 54,268.98 × 21,420.38
  4. Step 4: Simplify right side
    39,325.28x = 1,162,462,173.81
  5. Step 5: Solve for x
    x = 1,162,462,173.81/39,325.28
  6. Step 6: Final answer
    x = 29,560.18

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1.5x scale

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.