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Finding the Fourth Proportional to 19,699.71, 27,185.68 and 10,747.40

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Solution

The fourth proportional to 19,699.71, 27,185.68 and 10,747.40 is: 14,831.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,699.71 : 27,185.68 = 10,747.40 : x
  2. Step 2: Convert to fraction form
    19,699.71/27,185.68 = 10,747.40/x
  3. Step 3: Cross multiply
    19,699.71x = 27,185.68 × 10,747.40
  4. Step 4: Simplify right side
    19,699.71x = 292,175,347.20
  5. Step 5: Solve for x
    x = 292,175,347.20/19,699.71
  6. Step 6: Final answer
    x = 14,831.45

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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.