Home / 15,928.17-21,980.99-9,963.23

Finding the Fourth Proportional to 15,928.17, 21,980.99 and 9,963.23

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Solution

The fourth proportional to 15,928.17, 21,980.99 and 9,963.23 is: 13,749.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,928.17 : 21,980.99 = 9,963.23 : x
  2. Step 2: Convert to fraction form
    15,928.17/21,980.99 = 9,963.23/x
  3. Step 3: Cross multiply
    15,928.17x = 21,980.99 × 9,963.23
  4. Step 4: Simplify right side
    15,928.17x = 219,001,499.28
  5. Step 5: Solve for x
    x = 219,001,499.28/15,928.17
  6. Step 6: Final answer
    x = 13,749.32

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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.