Home / 19,485.60-29,228.40-11,709.60

Finding the Fourth Proportional to 19,485.60, 29,228.40 and 11,709.60

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Solution

The fourth proportional to 19,485.60, 29,228.40 and 11,709.60 is: 17,564.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,485.60 : 29,228.40 = 11,709.60 : x
  2. Step 2: Convert to fraction form
    19,485.60/29,228.40 = 11,709.60/x
  3. Step 3: Cross multiply
    19,485.60x = 29,228.40 × 11,709.60
  4. Step 4: Simplify right side
    19,485.60x = 342,252,872.64
  5. Step 5: Solve for x
    x = 342,252,872.64/19,485.60
  6. Step 6: Final answer
    x = 17,564.40

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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.