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Finding the Fourth Proportional to 15,070.99, 20,794.05 and 9,018.64

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Solution

The fourth proportional to 15,070.99, 20,794.05 and 9,018.64 is: 12,443.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,070.99 : 20,794.05 = 9,018.64 : x
  2. Step 2: Convert to fraction form
    15,070.99/20,794.05 = 9,018.64/x
  3. Step 3: Cross multiply
    15,070.99x = 20,794.05 × 9,018.64
  4. Step 4: Simplify right side
    15,070.99x = 187,534,051.09
  5. Step 5: Solve for x
    x = 187,534,051.09/15,070.99
  6. Step 6: Final answer
    x = 12,443.38

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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.