Home / 27,996.23-38,633.05-15,420.98

Finding the Fourth Proportional to 27,996.23, 38,633.05 and 15,420.98

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Solution

The fourth proportional to 27,996.23, 38,633.05 and 15,420.98 is: 21,279.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,996.23 : 38,633.05 = 15,420.98 : x
  2. Step 2: Convert to fraction form
    27,996.23/38,633.05 = 15,420.98/x
  3. Step 3: Cross multiply
    27,996.23x = 38,633.05 × 15,420.98
  4. Step 4: Simplify right side
    27,996.23x = 595,759,607.25
  5. Step 5: Solve for x
    x = 595,759,607.25/27,996.23
  6. Step 6: Final answer
    x = 21,279.99

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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.