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Finding the Fourth Proportional to 14,975.18, 20,665.01 and 9,005.69

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Solution

The fourth proportional to 14,975.18, 20,665.01 and 9,005.69 is: 12,427.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,975.18 : 20,665.01 = 9,005.69 : x
  2. Step 2: Convert to fraction form
    14,975.18/20,665.01 = 9,005.69/x
  3. Step 3: Cross multiply
    14,975.18x = 20,665.01 × 9,005.69
  4. Step 4: Simplify right side
    14,975.18x = 186,102,525.55
  5. Step 5: Solve for x
    x = 186,102,525.55/14,975.18
  6. Step 6: Final answer
    x = 12,427.40

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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.