Home / 20,937.65-31,369.58-11,055.16

Finding the Fourth Proportional to 20,937.65, 31,369.58 and 11,055.16

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Solution

The fourth proportional to 20,937.65, 31,369.58 and 11,055.16 is: 16,563.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,937.65 : 31,369.58 = 11,055.16 : x
  2. Step 2: Convert to fraction form
    20,937.65/31,369.58 = 11,055.16/x
  3. Step 3: Cross multiply
    20,937.65x = 31,369.58 × 11,055.16
  4. Step 4: Simplify right side
    20,937.65x = 346,795,513.91
  5. Step 5: Solve for x
    x = 346,795,513.91/20,937.65
  6. Step 6: Final answer
    x = 16,563.25

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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.