Home / 39,623.40-54,681.60-21,719.92

Finding the Fourth Proportional to 39,623.40, 54,681.60 and 21,719.92

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Solution

The fourth proportional to 39,623.40, 54,681.60 and 21,719.92 is: 29,974.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,623.40 : 54,681.60 = 21,719.92 : x
  2. Step 2: Convert to fraction form
    39,623.40/54,681.60 = 21,719.92/x
  3. Step 3: Cross multiply
    39,623.40x = 54,681.60 × 21,719.92
  4. Step 4: Simplify right side
    39,623.40x = 1,187,679,977.47
  5. Step 5: Solve for x
    x = 1,187,679,977.47/39,623.40
  6. Step 6: Final answer
    x = 29,974.21

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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.