Home / 21,563.65-29,756.22-12,130.39

Finding the Fourth Proportional to 21,563.65, 29,756.22 and 12,130.39

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Solution

The fourth proportional to 21,563.65, 29,756.22 and 12,130.39 is: 16,739.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,563.65 : 29,756.22 = 12,130.39 : x
  2. Step 2: Convert to fraction form
    21,563.65/29,756.22 = 12,130.39/x
  3. Step 3: Cross multiply
    21,563.65x = 29,756.22 × 12,130.39
  4. Step 4: Simplify right side
    21,563.65x = 360,954,553.53
  5. Step 5: Solve for x
    x = 360,954,553.53/21,563.65
  6. Step 6: Final answer
    x = 16,739.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.