Home / 21,563.02-29,756.76-12,131.38

Finding the Fourth Proportional to 21,563.02, 29,756.76 and 12,131.38

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Solution

The fourth proportional to 21,563.02, 29,756.76 and 12,131.38 is: 16,741.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,563.02 : 29,756.76 = 12,131.38 : x
  2. Step 2: Convert to fraction form
    21,563.02/29,756.76 = 12,131.38/x
  3. Step 3: Cross multiply
    21,563.02x = 29,756.76 × 12,131.38
  4. Step 4: Simplify right side
    21,563.02x = 360,990,563.13
  5. Step 5: Solve for x
    x = 360,990,563.13/21,563.02
  6. Step 6: Final answer
    x = 16,741.19

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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.