Home / 27,870.21-38,462.90-15,933.24

Finding the Fourth Proportional to 27,870.21, 38,462.90 and 15,933.24

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Solution

The fourth proportional to 27,870.21, 38,462.90 and 15,933.24 is: 21,989.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,870.21 : 38,462.90 = 15,933.24 : x
  2. Step 2: Convert to fraction form
    27,870.21/38,462.90 = 15,933.24/x
  3. Step 3: Cross multiply
    27,870.21x = 38,462.90 × 15,933.24
  4. Step 4: Simplify right side
    27,870.21x = 612,838,537.13
  5. Step 5: Solve for x
    x = 612,838,537.13/27,870.21
  6. Step 6: Final answer
    x = 21,989.02

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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.