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Finding the Fourth Proportional to 16,509.42, 24,726 and 9,921.09

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Solution

The fourth proportional to 16,509.42, 24,726 and 9,921.09 is: 14,858.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,509.42 : 24,726 = 9,921.09 : x
  2. Step 2: Convert to fraction form
    16,509.42/24,726 = 9,921.09/x
  3. Step 3: Cross multiply
    16,509.42x = 24,726 × 9,921.09
  4. Step 4: Simplify right side
    16,509.42x = 245,308,871.34
  5. Step 5: Solve for x
    x = 245,308,871.34/16,509.42
  6. Step 6: Final answer
    x = 14,858.72

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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.