Home / 12,429.52-18,741.90-11,396.40

Finding the Fourth Proportional to 12,429.52, 18,741.90 and 11,396.40

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Solution

The fourth proportional to 12,429.52, 18,741.90 and 11,396.40 is: 17,184.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,429.52 : 18,741.90 = 11,396.40 : x
  2. Step 2: Convert to fraction form
    12,429.52/18,741.90 = 11,396.40/x
  3. Step 3: Cross multiply
    12,429.52x = 18,741.90 × 11,396.40
  4. Step 4: Simplify right side
    12,429.52x = 213,590,189.16
  5. Step 5: Solve for x
    x = 213,590,189.16/12,429.52
  6. Step 6: Final answer
    x = 17,184.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.