Home / 19,358.40-29,037.60-11,938.80

Finding the Fourth Proportional to 19,358.40, 29,037.60 and 11,938.80

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Solution

The fourth proportional to 19,358.40, 29,037.60 and 11,938.80 is: 17,908.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,358.40 : 29,037.60 = 11,938.80 : x
  2. Step 2: Convert to fraction form
    19,358.40/29,037.60 = 11,938.80/x
  3. Step 3: Cross multiply
    19,358.40x = 29,037.60 × 11,938.80
  4. Step 4: Simplify right side
    19,358.40x = 346,674,098.88
  5. Step 5: Solve for x
    x = 346,674,098.88/19,358.40
  6. Step 6: Final answer
    x = 17,908.20

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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.