Home / 38,670.24-57,985.80-18,919.20

Finding the Fourth Proportional to 38,670.24, 57,985.80 and 18,919.20

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Solution

The fourth proportional to 38,670.24, 57,985.80 and 18,919.20 is: 28,369.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,670.24 : 57,985.80 = 18,919.20 : x
  2. Step 2: Convert to fraction form
    38,670.24/57,985.80 = 18,919.20/x
  3. Step 3: Cross multiply
    38,670.24x = 57,985.80 × 18,919.20
  4. Step 4: Simplify right side
    38,670.24x = 1,097,044,947.36
  5. Step 5: Solve for x
    x = 1,097,044,947.36/38,670.24
  6. Step 6: Final answer
    x = 28,369.23

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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.