Home / 19,772.30-27,286.47-11,275.81

Finding the Fourth Proportional to 19,772.30, 27,286.47 and 11,275.81

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Solution

The fourth proportional to 19,772.30, 27,286.47 and 11,275.81 is: 15,561.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,772.30 : 27,286.47 = 11,275.81 : x
  2. Step 2: Convert to fraction form
    19,772.30/27,286.47 = 11,275.81/x
  3. Step 3: Cross multiply
    19,772.30x = 27,286.47 × 11,275.81
  4. Step 4: Simplify right side
    19,772.30x = 307,676,983.07
  5. Step 5: Solve for x
    x = 307,676,983.07/19,772.30
  6. Step 6: Final answer
    x = 15,561.01

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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.