Home / 21,038.96-29,025.60-12,083.20

Finding the Fourth Proportional to 21,038.96, 29,025.60 and 12,083.20

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Solution

The fourth proportional to 21,038.96, 29,025.60 and 12,083.20 is: 16,670.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,038.96 : 29,025.60 = 12,083.20 : x
  2. Step 2: Convert to fraction form
    21,038.96/29,025.60 = 12,083.20/x
  3. Step 3: Cross multiply
    21,038.96x = 29,025.60 × 12,083.20
  4. Step 4: Simplify right side
    21,038.96x = 350,722,129.92
  5. Step 5: Solve for x
    x = 350,722,129.92/21,038.96
  6. Step 6: Final answer
    x = 16,670.13

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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.