Home / 27,870.30-38,461.08-15,933.96

Finding the Fourth Proportional to 27,870.30, 38,461.08 and 15,933.96

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Solution

The fourth proportional to 27,870.30, 38,461.08 and 15,933.96 is: 21,988.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,870.30 : 38,461.08 = 15,933.96 : x
  2. Step 2: Convert to fraction form
    27,870.30/38,461.08 = 15,933.96/x
  3. Step 3: Cross multiply
    27,870.30x = 38,461.08 × 15,933.96
  4. Step 4: Simplify right side
    27,870.30x = 612,837,310.28
  5. Step 5: Solve for x
    x = 612,837,310.28/27,870.30
  6. Step 6: Final answer
    x = 21,988.90

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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.