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Finding the Fourth Proportional to 19,012.97, 28,509.19 and 13,477.16

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Solution

The fourth proportional to 19,012.97, 28,509.19 and 13,477.16 is: 20,208.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,012.97 : 28,509.19 = 13,477.16 : x
  2. Step 2: Convert to fraction form
    19,012.97/28,509.19 = 13,477.16/x
  3. Step 3: Cross multiply
    19,012.97x = 28,509.19 × 13,477.16
  4. Step 4: Simplify right side
    19,012.97x = 384,222,915.10
  5. Step 5: Solve for x
    x = 384,222,915.10/19,012.97
  6. Step 6: Final answer
    x = 20,208.46

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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.