Home / 19,777.80-27,291.99-11,280.28

Finding the Fourth Proportional to 19,777.80, 27,291.99 and 11,280.28

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Solution

The fourth proportional to 19,777.80, 27,291.99 and 11,280.28 is: 15,566.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,777.80 : 27,291.99 = 11,280.28 : x
  2. Step 2: Convert to fraction form
    19,777.80/27,291.99 = 11,280.28/x
  3. Step 3: Cross multiply
    19,777.80x = 27,291.99 × 11,280.28
  4. Step 4: Simplify right side
    19,777.80x = 307,861,250.75
  5. Step 5: Solve for x
    x = 307,861,250.75/19,777.80
  6. Step 6: Final answer
    x = 15,566.00

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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.