Home / 19,811.71-27,348.87-13,866.72

Finding the Fourth Proportional to 19,811.71, 27,348.87 and 13,866.72

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Solution

The fourth proportional to 19,811.71, 27,348.87 and 13,866.72 is: 19,142.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,811.71 : 27,348.87 = 13,866.72 : x
  2. Step 2: Convert to fraction form
    19,811.71/27,348.87 = 13,866.72/x
  3. Step 3: Cross multiply
    19,811.71x = 27,348.87 × 13,866.72
  4. Step 4: Simplify right side
    19,811.71x = 379,238,985.86
  5. Step 5: Solve for x
    x = 379,238,985.86/19,811.71
  6. Step 6: Final answer
    x = 19,142.16

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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.