Home / 19,409.20-29,064.30-12,815.26

Finding the Fourth Proportional to 19,409.20, 29,064.30 and 12,815.26

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Solution

The fourth proportional to 19,409.20, 29,064.30 and 12,815.26 is: 19,190.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,409.20 : 29,064.30 = 12,815.26 : x
  2. Step 2: Convert to fraction form
    19,409.20/29,064.30 = 12,815.26/x
  3. Step 3: Cross multiply
    19,409.20x = 29,064.30 × 12,815.26
  4. Step 4: Simplify right side
    19,409.20x = 372,466,561.22
  5. Step 5: Solve for x
    x = 372,466,561.22/19,409.20
  6. Step 6: Final answer
    x = 19,190.21

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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.