Home / 31,122.78-46,640.43-13,555.77

Finding the Fourth Proportional to 31,122.78, 46,640.43 and 13,555.77

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Solution

The fourth proportional to 31,122.78, 46,640.43 and 13,555.77 is: 20,314.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,122.78 : 46,640.43 = 13,555.77 : x
  2. Step 2: Convert to fraction form
    31,122.78/46,640.43 = 13,555.77/x
  3. Step 3: Cross multiply
    31,122.78x = 46,640.43 × 13,555.77
  4. Step 4: Simplify right side
    31,122.78x = 632,246,941.78
  5. Step 5: Solve for x
    x = 632,246,941.78/31,122.78
  6. Step 6: Final answer
    x = 20,314.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.