Home / 39,618.90-54,673.83-21,715.02

Finding the Fourth Proportional to 39,618.90, 54,673.83 and 21,715.02

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Solution

The fourth proportional to 39,618.90, 54,673.83 and 21,715.02 is: 29,966.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,618.90 : 54,673.83 = 21,715.02 : x
  2. Step 2: Convert to fraction form
    39,618.90/54,673.83 = 21,715.02/x
  3. Step 3: Cross multiply
    39,618.90x = 54,673.83 × 21,715.02
  4. Step 4: Simplify right side
    39,618.90x = 1,187,243,311.93
  5. Step 5: Solve for x
    x = 1,187,243,311.93/39,618.90
  6. Step 6: Final answer
    x = 29,966.59

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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.