Home / 20,985.05-31,452.53-14,625.49

Finding the Fourth Proportional to 20,985.05, 31,452.53 and 14,625.49

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Solution

The fourth proportional to 20,985.05, 31,452.53 and 14,625.49 is: 21,920.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,985.05 : 31,452.53 = 14,625.49 : x
  2. Step 2: Convert to fraction form
    20,985.05/31,452.53 = 14,625.49/x
  3. Step 3: Cross multiply
    20,985.05x = 31,452.53 × 14,625.49
  4. Step 4: Simplify right side
    20,985.05x = 460,008,662.99
  5. Step 5: Solve for x
    x = 460,008,662.99/20,985.05
  6. Step 6: Final answer
    x = 21,920.79

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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.