Home / 14,784.12-20,400.24-8,408.40

Finding the Fourth Proportional to 14,784.12, 20,400.24 and 8,408.40

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Solution

The fourth proportional to 14,784.12, 20,400.24 and 8,408.40 is: 11,602.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,784.12 : 20,400.24 = 8,408.40 : x
  2. Step 2: Convert to fraction form
    14,784.12/20,400.24 = 8,408.40/x
  3. Step 3: Cross multiply
    14,784.12x = 20,400.24 × 8,408.40
  4. Step 4: Simplify right side
    14,784.12x = 171,533,378.02
  5. Step 5: Solve for x
    x = 171,533,378.02/14,784.12
  6. Step 6: Final answer
    x = 11,602.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.