Home / 15,922.99-21,972.09-9,955.32

Finding the Fourth Proportional to 15,922.99, 21,972.09 and 9,955.32

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Solution

The fourth proportional to 15,922.99, 21,972.09 and 9,955.32 is: 13,737.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,922.99 : 21,972.09 = 9,955.32 : x
  2. Step 2: Convert to fraction form
    15,922.99/21,972.09 = 9,955.32/x
  3. Step 3: Cross multiply
    15,922.99x = 21,972.09 × 9,955.32
  4. Step 4: Simplify right side
    15,922.99x = 218,739,187.02
  5. Step 5: Solve for x
    x = 218,739,187.02/15,922.99
  6. Step 6: Final answer
    x = 13,737.32

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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.