Home / 42,157.79-63,267.87-19,971.23

Finding the Fourth Proportional to 42,157.79, 63,267.87 and 19,971.23

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Solution

The fourth proportional to 42,157.79, 63,267.87 and 19,971.23 is: 29,971.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,157.79 : 63,267.87 = 19,971.23 : x
  2. Step 2: Convert to fraction form
    42,157.79/63,267.87 = 19,971.23/x
  3. Step 3: Cross multiply
    42,157.79x = 63,267.87 × 19,971.23
  4. Step 4: Simplify right side
    42,157.79x = 1,263,537,183.38
  5. Step 5: Solve for x
    x = 1,263,537,183.38/42,157.79
  6. Step 6: Final answer
    x = 29,971.62

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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.