Home / 12,216.40-16,859.36-6,911.68

Finding the Fourth Proportional to 12,216.40, 16,859.36 and 6,911.68

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Solution

The fourth proportional to 12,216.40, 16,859.36 and 6,911.68 is: 9,538.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,216.40 : 16,859.36 = 6,911.68 : x
  2. Step 2: Convert to fraction form
    12,216.40/16,859.36 = 6,911.68/x
  3. Step 3: Cross multiply
    12,216.40x = 16,859.36 × 6,911.68
  4. Step 4: Simplify right side
    12,216.40x = 116,526,501.32
  5. Step 5: Solve for x
    x = 116,526,501.32/12,216.40
  6. Step 6: Final answer
    x = 9,538.53

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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.