Home / 14,172.48-21,261.60-5,407.20

Finding the Fourth Proportional to 14,172.48, 21,261.60 and 5,407.20

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Solution

The fourth proportional to 14,172.48, 21,261.60 and 5,407.20 is: 8,111.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,172.48 : 21,261.60 = 5,407.20 : x
  2. Step 2: Convert to fraction form
    14,172.48/21,261.60 = 5,407.20/x
  3. Step 3: Cross multiply
    14,172.48x = 21,261.60 × 5,407.20
  4. Step 4: Simplify right side
    14,172.48x = 114,965,723.52
  5. Step 5: Solve for x
    x = 114,965,723.52/14,172.48
  6. Step 6: Final answer
    x = 8,111.90

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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.