Home / 39,158.17-54,038.31-21,253.19

Finding the Fourth Proportional to 39,158.17, 54,038.31 and 21,253.19

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Solution

The fourth proportional to 39,158.17, 54,038.31 and 21,253.19 is: 29,329.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,158.17 : 54,038.31 = 21,253.19 : x
  2. Step 2: Convert to fraction form
    39,158.17/54,038.31 = 21,253.19/x
  3. Step 3: Cross multiply
    39,158.17x = 54,038.31 × 21,253.19
  4. Step 4: Simplify right side
    39,158.17x = 1,148,486,299.14
  5. Step 5: Solve for x
    x = 1,148,486,299.14/39,158.17
  6. Step 6: Final answer
    x = 29,329.42

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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.