Home / 29,280.16-40,406.60-15,851.40

Finding the Fourth Proportional to 29,280.16, 40,406.60 and 15,851.40

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Solution

The fourth proportional to 29,280.16, 40,406.60 and 15,851.40 is: 21,874.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,280.16 : 40,406.60 = 15,851.40 : x
  2. Step 2: Convert to fraction form
    29,280.16/40,406.60 = 15,851.40/x
  3. Step 3: Cross multiply
    29,280.16x = 40,406.60 × 15,851.40
  4. Step 4: Simplify right side
    29,280.16x = 640,501,179.24
  5. Step 5: Solve for x
    x = 640,501,179.24/29,280.16
  6. Step 6: Final answer
    x = 21,874.92

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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.