Home / 15,915.03-21,973.73-9,949.38

Finding the Fourth Proportional to 15,915.03, 21,973.73 and 9,949.38

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Solution

The fourth proportional to 15,915.03, 21,973.73 and 9,949.38 is: 13,737.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,915.03 : 21,973.73 = 9,949.38 : x
  2. Step 2: Convert to fraction form
    15,915.03/21,973.73 = 9,949.38/x
  3. Step 3: Cross multiply
    15,915.03x = 21,973.73 × 9,949.38
  4. Step 4: Simplify right side
    15,915.03x = 218,624,940.04
  5. Step 5: Solve for x
    x = 218,624,940.04/15,915.03
  6. Step 6: Final answer
    x = 13,737.01

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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.