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Finding the Fourth Proportional to 19,090.99, 28,629.62 and 6,607.63

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Solution

The fourth proportional to 19,090.99, 28,629.62 and 6,607.63 is: 9,909.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,090.99 : 28,629.62 = 6,607.63 : x
  2. Step 2: Convert to fraction form
    19,090.99/28,629.62 = 6,607.63/x
  3. Step 3: Cross multiply
    19,090.99x = 28,629.62 × 6,607.63
  4. Step 4: Simplify right side
    19,090.99x = 189,173,952.52
  5. Step 5: Solve for x
    x = 189,173,952.52/19,090.99
  6. Step 6: Final answer
    x = 9,909.07

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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.