Home / 20,512.50-30,607.75-19,258.62

Finding the Fourth Proportional to 20,512.50, 30,607.75 and 19,258.62

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Solution

The fourth proportional to 20,512.50, 30,607.75 and 19,258.62 is: 28,736.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,512.50 : 30,607.75 = 19,258.62 : x
  2. Step 2: Convert to fraction form
    20,512.50/30,607.75 = 19,258.62/x
  3. Step 3: Cross multiply
    20,512.50x = 30,607.75 × 19,258.62
  4. Step 4: Simplify right side
    20,512.50x = 589,463,026.31
  5. Step 5: Solve for x
    x = 589,463,026.31/20,512.50
  6. Step 6: Final answer
    x = 28,736.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.