Home / 15,659-21,480.74-14,811.62

Finding the Fourth Proportional to 15,659, 21,480.74 and 14,811.62

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Solution

The fourth proportional to 15,659, 21,480.74 and 14,811.62 is: 20,318.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,659 : 21,480.74 = 14,811.62 : x
  2. Step 2: Convert to fraction form
    15,659/21,480.74 = 14,811.62/x
  3. Step 3: Cross multiply
    15,659x = 21,480.74 × 14,811.62
  4. Step 4: Simplify right side
    15,659x = 318,164,558.20
  5. Step 5: Solve for x
    x = 318,164,558.20/15,659
  6. Step 6: Final answer
    x = 20,318.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.