Home / 14,775.21-20,403.60-9,479.23

Finding the Fourth Proportional to 14,775.21, 20,403.60 and 9,479.23

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Solution

The fourth proportional to 14,775.21, 20,403.60 and 9,479.23 is: 13,090.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,775.21 : 20,403.60 = 9,479.23 : x
  2. Step 2: Convert to fraction form
    14,775.21/20,403.60 = 9,479.23/x
  3. Step 3: Cross multiply
    14,775.21x = 20,403.60 × 9,479.23
  4. Step 4: Simplify right side
    14,775.21x = 193,410,330.67
  5. Step 5: Solve for x
    x = 193,410,330.67/14,775.21
  6. Step 6: Final answer
    x = 13,090.19

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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.