Home / 29,283.78-40,411.71-15,855.18

Finding the Fourth Proportional to 29,283.78, 40,411.71 and 15,855.18

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Solution

The fourth proportional to 29,283.78, 40,411.71 and 15,855.18 is: 21,880.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,283.78 : 40,411.71 = 15,855.18 : x
  2. Step 2: Convert to fraction form
    29,283.78/40,411.71 = 15,855.18/x
  3. Step 3: Cross multiply
    29,283.78x = 40,411.71 × 15,855.18
  4. Step 4: Simplify right side
    29,283.78x = 640,734,936.16
  5. Step 5: Solve for x
    x = 640,734,936.16/29,283.78
  6. Step 6: Final answer
    x = 21,880.20

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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.