Home / 20,752.16-31,128.23-11,537.60

Finding the Fourth Proportional to 20,752.16, 31,128.23 and 11,537.60

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Solution

The fourth proportional to 20,752.16, 31,128.23 and 11,537.60 is: 17,306.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,752.16 : 31,128.23 = 11,537.60 : x
  2. Step 2: Convert to fraction form
    20,752.16/31,128.23 = 11,537.60/x
  3. Step 3: Cross multiply
    20,752.16x = 31,128.23 × 11,537.60
  4. Step 4: Simplify right side
    20,752.16x = 359,144,939.65
  5. Step 5: Solve for x
    x = 359,144,939.65/20,752.16
  6. Step 6: Final answer
    x = 17,306.39

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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.