Home / 15,918.64-21,967.32-8,845.68

Finding the Fourth Proportional to 15,918.64, 21,967.32 and 8,845.68

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Solution

The fourth proportional to 15,918.64, 21,967.32 and 8,845.68 is: 12,206.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,918.64 : 21,967.32 = 8,845.68 : x
  2. Step 2: Convert to fraction form
    15,918.64/21,967.32 = 8,845.68/x
  3. Step 3: Cross multiply
    15,918.64x = 21,967.32 × 8,845.68
  4. Step 4: Simplify right side
    15,918.64x = 194,315,883.18
  5. Step 5: Solve for x
    x = 194,315,883.18/15,918.64
  6. Step 6: Final answer
    x = 12,206.81

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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.