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Finding the Fourth Proportional to 15,980.42, 22,053.08 and 8,907.30

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Solution

The fourth proportional to 15,980.42, 22,053.08 and 8,907.30 is: 12,292.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,980.42 : 22,053.08 = 8,907.30 : x
  2. Step 2: Convert to fraction form
    15,980.42/22,053.08 = 8,907.30/x
  3. Step 3: Cross multiply
    15,980.42x = 22,053.08 × 8,907.30
  4. Step 4: Simplify right side
    15,980.42x = 196,433,421.75
  5. Step 5: Solve for x
    x = 196,433,421.75/15,980.42
  6. Step 6: Final answer
    x = 12,292.13

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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.