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Finding the Fourth Proportional to 15,980.69, 22,054.10 and 8,907.16

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Solution

The fourth proportional to 15,980.69, 22,054.10 and 8,907.16 is: 12,292.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,980.69 : 22,054.10 = 8,907.16 : x
  2. Step 2: Convert to fraction form
    15,980.69/22,054.10 = 8,907.16/x
  3. Step 3: Cross multiply
    15,980.69x = 22,054.10 × 8,907.16
  4. Step 4: Simplify right side
    15,980.69x = 196,439,397.36
  5. Step 5: Solve for x
    x = 196,439,397.36/15,980.69
  6. Step 6: Final answer
    x = 12,292.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.