Home / 12,209.28-16,847.64-9,697.47

Finding the Fourth Proportional to 12,209.28, 16,847.64 and 9,697.47

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Solution

The fourth proportional to 12,209.28, 16,847.64 and 9,697.47 is: 13,381.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,209.28 : 16,847.64 = 9,697.47 : x
  2. Step 2: Convert to fraction form
    12,209.28/16,847.64 = 9,697.47/x
  3. Step 3: Cross multiply
    12,209.28x = 16,847.64 × 9,697.47
  4. Step 4: Simplify right side
    12,209.28x = 163,379,483.47
  5. Step 5: Solve for x
    x = 163,379,483.47/12,209.28
  6. Step 6: Final answer
    x = 13,381.58

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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.