Home / 11,909.36-16,433.74-6,875.21

Finding the Fourth Proportional to 11,909.36, 16,433.74 and 6,875.21

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Solution

The fourth proportional to 11,909.36, 16,433.74 and 6,875.21 is: 9,487.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,909.36 : 16,433.74 = 6,875.21 : x
  2. Step 2: Convert to fraction form
    11,909.36/16,433.74 = 6,875.21/x
  3. Step 3: Cross multiply
    11,909.36x = 16,433.74 × 6,875.21
  4. Step 4: Simplify right side
    11,909.36x = 112,985,314.23
  5. Step 5: Solve for x
    x = 112,985,314.23/11,909.36
  6. Step 6: Final answer
    x = 9,487.10

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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.