Home / 20,724.36-31,057.10-15,962.51

Finding the Fourth Proportional to 20,724.36, 31,057.10 and 15,962.51

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Solution

The fourth proportional to 20,724.36, 31,057.10 and 15,962.51 is: 23,921.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,724.36 : 31,057.10 = 15,962.51 : x
  2. Step 2: Convert to fraction form
    20,724.36/31,057.10 = 15,962.51/x
  3. Step 3: Cross multiply
    20,724.36x = 31,057.10 × 15,962.51
  4. Step 4: Simplify right side
    20,724.36x = 495,749,329.45
  5. Step 5: Solve for x
    x = 495,749,329.45/20,724.36
  6. Step 6: Final answer
    x = 23,921.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.