Home / 12,893.10-19,339.65-4,128.90

Finding the Fourth Proportional to 12,893.10, 19,339.65 and 4,128.90

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Solution

The fourth proportional to 12,893.10, 19,339.65 and 4,128.90 is: 6,193.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,893.10 : 19,339.65 = 4,128.90 : x
  2. Step 2: Convert to fraction form
    12,893.10/19,339.65 = 4,128.90/x
  3. Step 3: Cross multiply
    12,893.10x = 19,339.65 × 4,128.90
  4. Step 4: Simplify right side
    12,893.10x = 79,851,480.89
  5. Step 5: Solve for x
    x = 79,851,480.89/12,893.10
  6. Step 6: Final answer
    x = 6,193.35

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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.