Home / 20,202.51-27,915.62-15,737.79

Finding the Fourth Proportional to 20,202.51, 27,915.62 and 15,737.79

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Solution

The fourth proportional to 20,202.51, 27,915.62 and 15,737.79 is: 21,746.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,202.51 : 27,915.62 = 15,737.79 : x
  2. Step 2: Convert to fraction form
    20,202.51/27,915.62 = 15,737.79/x
  3. Step 3: Cross multiply
    20,202.51x = 27,915.62 × 15,737.79
  4. Step 4: Simplify right side
    20,202.51x = 439,330,165.28
  5. Step 5: Solve for x
    x = 439,330,165.28/20,202.51
  6. Step 6: Final answer
    x = 21,746.32

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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.