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Finding the Fourth Proportional to 27,763.74, 38,289.74 and 19,681.41

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Solution

The fourth proportional to 27,763.74, 38,289.74 and 19,681.41 is: 27,143.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,763.74 : 38,289.74 = 19,681.41 : x
  2. Step 2: Convert to fraction form
    27,763.74/38,289.74 = 19,681.41/x
  3. Step 3: Cross multiply
    27,763.74x = 38,289.74 × 19,681.41
  4. Step 4: Simplify right side
    27,763.74x = 753,596,071.73
  5. Step 5: Solve for x
    x = 753,596,071.73/27,763.74
  6. Step 6: Final answer
    x = 27,143.18

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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.