Home / 14,147.88-21,219.06-13,445.40

Finding the Fourth Proportional to 14,147.88, 21,219.06 and 13,445.40

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Solution

The fourth proportional to 14,147.88, 21,219.06 and 13,445.40 is: 20,165.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,147.88 : 21,219.06 = 13,445.40 : x
  2. Step 2: Convert to fraction form
    14,147.88/21,219.06 = 13,445.40/x
  3. Step 3: Cross multiply
    14,147.88x = 21,219.06 × 13,445.40
  4. Step 4: Simplify right side
    14,147.88x = 285,298,749.32
  5. Step 5: Solve for x
    x = 285,298,749.32/14,147.88
  6. Step 6: Final answer
    x = 20,165.48

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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.