Home / 13,785.21-20,666.12-5,471.10

Finding the Fourth Proportional to 13,785.21, 20,666.12 and 5,471.10

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Solution

The fourth proportional to 13,785.21, 20,666.12 and 5,471.10 is: 8,202.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,785.21 : 20,666.12 = 5,471.10 : x
  2. Step 2: Convert to fraction form
    13,785.21/20,666.12 = 5,471.10/x
  3. Step 3: Cross multiply
    13,785.21x = 20,666.12 × 5,471.10
  4. Step 4: Simplify right side
    13,785.21x = 113,066,381.78
  5. Step 5: Solve for x
    x = 113,066,381.78/13,785.21
  6. Step 6: Final answer
    x = 8,202.01

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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.