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Finding the Fourth Proportional to 15,071.99, 20,795.43 and 9,019.64

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Solution

The fourth proportional to 15,071.99, 20,795.43 and 9,019.64 is: 12,444.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,071.99 : 20,795.43 = 9,019.64 : x
  2. Step 2: Convert to fraction form
    15,071.99/20,795.43 = 9,019.64/x
  3. Step 3: Cross multiply
    15,071.99x = 20,795.43 × 9,019.64
  4. Step 4: Simplify right side
    15,071.99x = 187,567,292.25
  5. Step 5: Solve for x
    x = 187,567,292.25/15,071.99
  6. Step 6: Final answer
    x = 12,444.76

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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.