Home / 27,871.90-38,461.99-15,936.02

Finding the Fourth Proportional to 27,871.90, 38,461.99 and 15,936.02

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Solution

The fourth proportional to 27,871.90, 38,461.99 and 15,936.02 is: 21,991.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,871.90 : 38,461.99 = 15,936.02 : x
  2. Step 2: Convert to fraction form
    27,871.90/38,461.99 = 15,936.02/x
  3. Step 3: Cross multiply
    27,871.90x = 38,461.99 × 15,936.02
  4. Step 4: Simplify right side
    27,871.90x = 612,930,875.67
  5. Step 5: Solve for x
    x = 612,930,875.67/27,871.90
  6. Step 6: Final answer
    x = 21,991.00

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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.