Home / 13,538.16-20,307.21-3,677.45

Finding the Fourth Proportional to 13,538.16, 20,307.21 and 3,677.45

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Solution

The fourth proportional to 13,538.16, 20,307.21 and 3,677.45 is: 5,516.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,538.16 : 20,307.21 = 3,677.45 : x
  2. Step 2: Convert to fraction form
    13,538.16/20,307.21 = 3,677.45/x
  3. Step 3: Cross multiply
    13,538.16x = 20,307.21 × 3,677.45
  4. Step 4: Simplify right side
    13,538.16x = 74,678,647.88
  5. Step 5: Solve for x
    x = 74,678,647.88/13,538.16
  6. Step 6: Final answer
    x = 5,516.16

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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.