Home / 15,477.37-21,358.19-8,403.64

Finding the Fourth Proportional to 15,477.37, 21,358.19 and 8,403.64

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Solution

The fourth proportional to 15,477.37, 21,358.19 and 8,403.64 is: 11,596.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,477.37 : 21,358.19 = 8,403.64 : x
  2. Step 2: Convert to fraction form
    15,477.37/21,358.19 = 8,403.64/x
  3. Step 3: Cross multiply
    15,477.37x = 21,358.19 × 8,403.64
  4. Step 4: Simplify right side
    15,477.37x = 179,486,539.81
  5. Step 5: Solve for x
    x = 179,486,539.81/15,477.37
  6. Step 6: Final answer
    x = 11,596.71

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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.