Home / 30,721.41-42,395.64-17,292.87

Finding the Fourth Proportional to 30,721.41, 42,395.64 and 17,292.87

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Solution

The fourth proportional to 30,721.41, 42,395.64 and 17,292.87 is: 23,864.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,721.41 : 42,395.64 = 17,292.87 : x
  2. Step 2: Convert to fraction form
    30,721.41/42,395.64 = 17,292.87/x
  3. Step 3: Cross multiply
    30,721.41x = 42,395.64 × 17,292.87
  4. Step 4: Simplify right side
    30,721.41x = 733,142,226.24
  5. Step 5: Solve for x
    x = 733,142,226.24/30,721.41
  6. Step 6: Final answer
    x = 23,864.21

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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.