Home / 29,280.15-40,406.12-15,851.29

Finding the Fourth Proportional to 29,280.15, 40,406.12 and 15,851.29

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Solution

The fourth proportional to 29,280.15, 40,406.12 and 15,851.29 is: 21,874.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,280.15 : 40,406.12 = 15,851.29 : x
  2. Step 2: Convert to fraction form
    29,280.15/40,406.12 = 15,851.29/x
  3. Step 3: Cross multiply
    29,280.15x = 40,406.12 × 15,851.29
  4. Step 4: Simplify right side
    29,280.15x = 640,489,056.35
  5. Step 5: Solve for x
    x = 640,489,056.35/29,280.15
  6. Step 6: Final answer
    x = 21,874.51

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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.