Home / 12,445.37-18,670.78-9,148.47

Finding the Fourth Proportional to 12,445.37, 18,670.78 and 9,148.47

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Solution

The fourth proportional to 12,445.37, 18,670.78 and 9,148.47 is: 13,724.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,445.37 : 18,670.78 = 9,148.47 : x
  2. Step 2: Convert to fraction form
    12,445.37/18,670.78 = 9,148.47/x
  3. Step 3: Cross multiply
    12,445.37x = 18,670.78 × 9,148.47
  4. Step 4: Simplify right side
    12,445.37x = 170,808,977.35
  5. Step 5: Solve for x
    x = 170,808,977.35/12,445.37
  6. Step 6: Final answer
    x = 13,724.71

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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.