Home / 13,391.02-20,083.65-8,454.07

Finding the Fourth Proportional to 13,391.02, 20,083.65 and 8,454.07

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Solution

The fourth proportional to 13,391.02, 20,083.65 and 8,454.07 is: 12,679.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,391.02 : 20,083.65 = 8,454.07 : x
  2. Step 2: Convert to fraction form
    13,391.02/20,083.65 = 8,454.07/x
  3. Step 3: Cross multiply
    13,391.02x = 20,083.65 × 8,454.07
  4. Step 4: Simplify right side
    13,391.02x = 169,788,582.96
  5. Step 5: Solve for x
    x = 169,788,582.96/13,391.02
  6. Step 6: Final answer
    x = 12,679.29

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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.