Home / 19,670.71-27,145.89-10,718.21

Finding the Fourth Proportional to 19,670.71, 27,145.89 and 10,718.21

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Solution

The fourth proportional to 19,670.71, 27,145.89 and 10,718.21 is: 14,791.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,670.71 : 27,145.89 = 10,718.21 : x
  2. Step 2: Convert to fraction form
    19,670.71/27,145.89 = 10,718.21/x
  3. Step 3: Cross multiply
    19,670.71x = 27,145.89 × 10,718.21
  4. Step 4: Simplify right side
    19,670.71x = 290,955,349.66
  5. Step 5: Solve for x
    x = 290,955,349.66/19,670.71
  6. Step 6: Final answer
    x = 14,791.30

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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.