Home / 21,911.81-30,252.15-16,866.54

Finding the Fourth Proportional to 21,911.81, 30,252.15 and 16,866.54

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Solution

The fourth proportional to 21,911.81, 30,252.15 and 16,866.54 is: 23,286.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,911.81 : 30,252.15 = 16,866.54 : x
  2. Step 2: Convert to fraction form
    21,911.81/30,252.15 = 16,866.54/x
  3. Step 3: Cross multiply
    21,911.81x = 30,252.15 × 16,866.54
  4. Step 4: Simplify right side
    21,911.81x = 510,249,098.06
  5. Step 5: Solve for x
    x = 510,249,098.06/21,911.81
  6. Step 6: Final answer
    x = 23,286.49

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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.