Home / 30,414.36-41,972.70-16,985.40

Finding the Fourth Proportional to 30,414.36, 41,972.70 and 16,985.40

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Solution

The fourth proportional to 30,414.36, 41,972.70 and 16,985.40 is: 23,440.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,414.36 : 41,972.70 = 16,985.40 : x
  2. Step 2: Convert to fraction form
    30,414.36/41,972.70 = 16,985.40/x
  3. Step 3: Cross multiply
    30,414.36x = 41,972.70 × 16,985.40
  4. Step 4: Simplify right side
    30,414.36x = 712,923,098.58
  5. Step 5: Solve for x
    x = 712,923,098.58/30,414.36
  6. Step 6: Final answer
    x = 23,440.35

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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.