Home / 9,421.11-13,000.86-5,172.14

Finding the Fourth Proportional to 9,421.11, 13,000.86 and 5,172.14

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Solution

The fourth proportional to 9,421.11, 13,000.86 and 5,172.14 is: 7,137.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,421.11 : 13,000.86 = 5,172.14 : x
  2. Step 2: Convert to fraction form
    9,421.11/13,000.86 = 5,172.14/x
  3. Step 3: Cross multiply
    9,421.11x = 13,000.86 × 5,172.14
  4. Step 4: Simplify right side
    9,421.11x = 67,242,300.54
  5. Step 5: Solve for x
    x = 67,242,300.54/9,421.11
  6. Step 6: Final answer
    x = 7,137.41

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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.