Home / 20,756.22-31,122.36-14,190.36

Finding the Fourth Proportional to 20,756.22, 31,122.36 and 14,190.36

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Solution

The fourth proportional to 20,756.22, 31,122.36 and 14,190.36 is: 21,277.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,756.22 : 31,122.36 = 14,190.36 : x
  2. Step 2: Convert to fraction form
    20,756.22/31,122.36 = 14,190.36/x
  3. Step 3: Cross multiply
    20,756.22x = 31,122.36 × 14,190.36
  4. Step 4: Simplify right side
    20,756.22x = 441,637,492.45
  5. Step 5: Solve for x
    x = 441,637,492.45/20,756.22
  6. Step 6: Final answer
    x = 21,277.36

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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.