Home / 14,782.60-20,399.96-9,477.40

Finding the Fourth Proportional to 14,782.60, 20,399.96 and 9,477.40

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Solution

The fourth proportional to 14,782.60, 20,399.96 and 9,477.40 is: 13,078.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,782.60 : 20,399.96 = 9,477.40 : x
  2. Step 2: Convert to fraction form
    14,782.60/20,399.96 = 9,477.40/x
  3. Step 3: Cross multiply
    14,782.60x = 20,399.96 × 9,477.40
  4. Step 4: Simplify right side
    14,782.60x = 193,338,580.90
  5. Step 5: Solve for x
    x = 193,338,580.90/14,782.60
  6. Step 6: Final answer
    x = 13,078.79

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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.