Home / 38,213.60-57,320.40-11,918.30

Finding the Fourth Proportional to 38,213.60, 57,320.40 and 11,918.30

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Solution

The fourth proportional to 38,213.60, 57,320.40 and 11,918.30 is: 17,877.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,213.60 : 57,320.40 = 11,918.30 : x
  2. Step 2: Convert to fraction form
    38,213.60/57,320.40 = 11,918.30/x
  3. Step 3: Cross multiply
    38,213.60x = 57,320.40 × 11,918.30
  4. Step 4: Simplify right side
    38,213.60x = 683,161,723.32
  5. Step 5: Solve for x
    x = 683,161,723.32/38,213.60
  6. Step 6: Final answer
    x = 17,877.45

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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.