Home / 20,965.88-31,457.46-15,447.08

Finding the Fourth Proportional to 20,965.88, 31,457.46 and 15,447.08

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Solution

The fourth proportional to 20,965.88, 31,457.46 and 15,447.08 is: 23,176.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,965.88 : 31,457.46 = 15,447.08 : x
  2. Step 2: Convert to fraction form
    20,965.88/31,457.46 = 15,447.08/x
  3. Step 3: Cross multiply
    20,965.88x = 31,457.46 × 15,447.08
  4. Step 4: Simplify right side
    20,965.88x = 485,925,901.22
  5. Step 5: Solve for x
    x = 485,925,901.22/20,965.88
  6. Step 6: Final answer
    x = 23,176.99

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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.