Home / 15,930.99-21,983.13-9,963.32

Finding the Fourth Proportional to 15,930.99, 21,983.13 and 9,963.32

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Solution

The fourth proportional to 15,930.99, 21,983.13 and 9,963.32 is: 13,748.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,930.99 : 21,983.13 = 9,963.32 : x
  2. Step 2: Convert to fraction form
    15,930.99/21,983.13 = 9,963.32/x
  3. Step 3: Cross multiply
    15,930.99x = 21,983.13 × 9,963.32
  4. Step 4: Simplify right side
    15,930.99x = 219,024,848.88
  5. Step 5: Solve for x
    x = 219,024,848.88/15,930.99
  6. Step 6: Final answer
    x = 13,748.35

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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.