Home / 19,645.20-29,467.80-13,424.40

Finding the Fourth Proportional to 19,645.20, 29,467.80 and 13,424.40

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Solution

The fourth proportional to 19,645.20, 29,467.80 and 13,424.40 is: 20,136.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,645.20 : 29,467.80 = 13,424.40 : x
  2. Step 2: Convert to fraction form
    19,645.20/29,467.80 = 13,424.40/x
  3. Step 3: Cross multiply
    19,645.20x = 29,467.80 × 13,424.40
  4. Step 4: Simplify right side
    19,645.20x = 395,587,534.32
  5. Step 5: Solve for x
    x = 395,587,534.32/19,645.20
  6. Step 6: Final answer
    x = 20,136.60

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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.