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Finding the Fourth Proportional to 16,699.42, 23,041.11 and 9,987.22

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Solution

The fourth proportional to 16,699.42, 23,041.11 and 9,987.22 is: 13,779.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,699.42 : 23,041.11 = 9,987.22 : x
  2. Step 2: Convert to fraction form
    16,699.42/23,041.11 = 9,987.22/x
  3. Step 3: Cross multiply
    16,699.42x = 23,041.11 × 9,987.22
  4. Step 4: Simplify right side
    16,699.42x = 230,116,634.61
  5. Step 5: Solve for x
    x = 230,116,634.61/16,699.42
  6. Step 6: Final answer
    x = 13,779.92

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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.