Home / 20,625.40-31,069.51-18,832.06

Finding the Fourth Proportional to 20,625.40, 31,069.51 and 18,832.06

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Solution

The fourth proportional to 20,625.40, 31,069.51 and 18,832.06 is: 28,368.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,625.40 : 31,069.51 = 18,832.06 : x
  2. Step 2: Convert to fraction form
    20,625.40/31,069.51 = 18,832.06/x
  3. Step 3: Cross multiply
    20,625.40x = 31,069.51 × 18,832.06
  4. Step 4: Simplify right side
    20,625.40x = 585,102,876.49
  5. Step 5: Solve for x
    x = 585,102,876.49/20,625.40
  6. Step 6: Final answer
    x = 28,368.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.