Home / 19,775.90-27,298.67-11,816.64

Finding the Fourth Proportional to 19,775.90, 27,298.67 and 11,816.64

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Solution

The fourth proportional to 19,775.90, 27,298.67 and 11,816.64 is: 16,311.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,775.90 : 27,298.67 = 11,816.64 : x
  2. Step 2: Convert to fraction form
    19,775.90/27,298.67 = 11,816.64/x
  3. Step 3: Cross multiply
    19,775.90x = 27,298.67 × 11,816.64
  4. Step 4: Simplify right side
    19,775.90x = 322,578,496.79
  5. Step 5: Solve for x
    x = 322,578,496.79/19,775.90
  6. Step 6: Final answer
    x = 16,311.70

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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.