Home / 27,880.82-38,466.08-15,935.70

Finding the Fourth Proportional to 27,880.82, 38,466.08 and 15,935.70

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Solution

The fourth proportional to 27,880.82, 38,466.08 and 15,935.70 is: 21,985.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,880.82 : 38,466.08 = 15,935.70 : x
  2. Step 2: Convert to fraction form
    27,880.82/38,466.08 = 15,935.70/x
  3. Step 3: Cross multiply
    27,880.82x = 38,466.08 × 15,935.70
  4. Step 4: Simplify right side
    27,880.82x = 612,983,911.06
  5. Step 5: Solve for x
    x = 612,983,911.06/27,880.82
  6. Step 6: Final answer
    x = 21,985.86

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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.