Home / 13,655.09-20,490.60-5,757.13

Finding the Fourth Proportional to 13,655.09, 20,490.60 and 5,757.13

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Solution

The fourth proportional to 13,655.09, 20,490.60 and 5,757.13 is: 8,639.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,655.09 : 20,490.60 = 5,757.13 : x
  2. Step 2: Convert to fraction form
    13,655.09/20,490.60 = 5,757.13/x
  3. Step 3: Cross multiply
    13,655.09x = 20,490.60 × 5,757.13
  4. Step 4: Simplify right side
    13,655.09x = 117,967,047.98
  5. Step 5: Solve for x
    x = 117,967,047.98/13,655.09
  6. Step 6: Final answer
    x = 8,639.05

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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.