Home / 15,408.80-23,113.20-12,784.40

Finding the Fourth Proportional to 15,408.80, 23,113.20 and 12,784.40

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Solution

The fourth proportional to 15,408.80, 23,113.20 and 12,784.40 is: 19,176.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,408.80 : 23,113.20 = 12,784.40 : x
  2. Step 2: Convert to fraction form
    15,408.80/23,113.20 = 12,784.40/x
  3. Step 3: Cross multiply
    15,408.80x = 23,113.20 × 12,784.40
  4. Step 4: Simplify right side
    15,408.80x = 295,488,394.08
  5. Step 5: Solve for x
    x = 295,488,394.08/15,408.80
  6. Step 6: Final answer
    x = 19,176.60

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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.