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Finding the Fourth Proportional to 14,651.16, 20,218.90 and 7,937.08

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Solution

The fourth proportional to 14,651.16, 20,218.90 and 7,937.08 is: 10,953.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,651.16 : 20,218.90 = 7,937.08 : x
  2. Step 2: Convert to fraction form
    14,651.16/20,218.90 = 7,937.08/x
  3. Step 3: Cross multiply
    14,651.16x = 20,218.90 × 7,937.08
  4. Step 4: Simplify right side
    14,651.16x = 160,479,026.81
  5. Step 5: Solve for x
    x = 160,479,026.81/14,651.16
  6. Step 6: Final answer
    x = 10,953.33

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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.