Home / 28,102.72-42,154.06-9,131.16

Finding the Fourth Proportional to 28,102.72, 42,154.06 and 9,131.16

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Solution

The fourth proportional to 28,102.72, 42,154.06 and 9,131.16 is: 13,696.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,102.72 : 42,154.06 = 9,131.16 : x
  2. Step 2: Convert to fraction form
    28,102.72/42,154.06 = 9,131.16/x
  3. Step 3: Cross multiply
    28,102.72x = 42,154.06 × 9,131.16
  4. Step 4: Simplify right side
    28,102.72x = 384,915,466.51
  5. Step 5: Solve for x
    x = 384,915,466.51/28,102.72
  6. Step 6: Final answer
    x = 13,696.73

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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.