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Finding the Fourth Proportional to 14,689.16, 20,271.39 and 7,975.07

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Solution

The fourth proportional to 14,689.16, 20,271.39 and 7,975.07 is: 11,005.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,689.16 : 20,271.39 = 7,975.07 : x
  2. Step 2: Convert to fraction form
    14,689.16/20,271.39 = 7,975.07/x
  3. Step 3: Cross multiply
    14,689.16x = 20,271.39 × 7,975.07
  4. Step 4: Simplify right side
    14,689.16x = 161,665,652.89
  5. Step 5: Solve for x
    x = 161,665,652.89/14,689.16
  6. Step 6: Final answer
    x = 11,005.78

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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.