Home / 15,846.80-23,741.40-12,909.20

Finding the Fourth Proportional to 15,846.80, 23,741.40 and 12,909.20

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Solution

The fourth proportional to 15,846.80, 23,741.40 and 12,909.20 is: 19,340.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,846.80 : 23,741.40 = 12,909.20 : x
  2. Step 2: Convert to fraction form
    15,846.80/23,741.40 = 12,909.20/x
  3. Step 3: Cross multiply
    15,846.80x = 23,741.40 × 12,909.20
  4. Step 4: Simplify right side
    15,846.80x = 306,482,480.88
  5. Step 5: Solve for x
    x = 306,482,480.88/15,846.80
  6. Step 6: Final answer
    x = 19,340.34

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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.