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Finding the Fourth Proportional to 13,484.21, 20,223.08 and 6,907.01

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Solution

The fourth proportional to 13,484.21, 20,223.08 and 6,907.01 is: 10,358.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,484.21 : 20,223.08 = 6,907.01 : x
  2. Step 2: Convert to fraction form
    13,484.21/20,223.08 = 6,907.01/x
  3. Step 3: Cross multiply
    13,484.21x = 20,223.08 × 6,907.01
  4. Step 4: Simplify right side
    13,484.21x = 139,681,057.71
  5. Step 5: Solve for x
    x = 139,681,057.71/13,484.21
  6. Step 6: Final answer
    x = 10,358.86

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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.