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Finding the Fourth Proportional to 18,752.58, 28,117.53 and 9,381.69

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Solution

The fourth proportional to 18,752.58, 28,117.53 and 9,381.69 is: 14,066.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,752.58 : 28,117.53 = 9,381.69 : x
  2. Step 2: Convert to fraction form
    18,752.58/28,117.53 = 9,381.69/x
  3. Step 3: Cross multiply
    18,752.58x = 28,117.53 × 9,381.69
  4. Step 4: Simplify right side
    18,752.58x = 263,789,950.03
  5. Step 5: Solve for x
    x = 263,789,950.03/18,752.58
  6. Step 6: Final answer
    x = 14,066.86

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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.