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Finding the Fourth Proportional to 38,375.56, 57,457.05 and 19,615.20

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Solution

The fourth proportional to 38,375.56, 57,457.05 and 19,615.20 is: 29,368.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,375.56 : 57,457.05 = 19,615.20 : x
  2. Step 2: Convert to fraction form
    38,375.56/57,457.05 = 19,615.20/x
  3. Step 3: Cross multiply
    38,375.56x = 57,457.05 × 19,615.20
  4. Step 4: Simplify right side
    38,375.56x = 1,127,031,239.87
  5. Step 5: Solve for x
    x = 1,127,031,239.87/38,375.56
  6. Step 6: Final answer
    x = 29,368.46

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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.