Home / 19,776.72-27,287.10-11,710.74

Finding the Fourth Proportional to 19,776.72, 27,287.10 and 11,710.74

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Solution

The fourth proportional to 19,776.72, 27,287.10 and 11,710.74 is: 16,157.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,776.72 : 27,287.10 = 11,710.74 : x
  2. Step 2: Convert to fraction form
    19,776.72/27,287.10 = 11,710.74/x
  3. Step 3: Cross multiply
    19,776.72x = 27,287.10 × 11,710.74
  4. Step 4: Simplify right side
    19,776.72x = 319,552,133.45
  5. Step 5: Solve for x
    x = 319,552,133.45/19,776.72
  6. Step 6: Final answer
    x = 16,157.99

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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.