Home / 20,962.96-31,416.66-15,390.26

Finding the Fourth Proportional to 20,962.96, 31,416.66 and 15,390.26

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Solution

The fourth proportional to 20,962.96, 31,416.66 and 15,390.26 is: 23,064.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,962.96 : 31,416.66 = 15,390.26 : x
  2. Step 2: Convert to fraction form
    20,962.96/31,416.66 = 15,390.26/x
  3. Step 3: Cross multiply
    20,962.96x = 31,416.66 × 15,390.26
  4. Step 4: Simplify right side
    20,962.96x = 483,510,565.73
  5. Step 5: Solve for x
    x = 483,510,565.73/20,962.96
  6. Step 6: Final answer
    x = 23,064.99

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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.