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Finding the Fourth Proportional to 18,716, 28,081.30 and 7,030.14

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Solution

The fourth proportional to 18,716, 28,081.30 and 7,030.14 is: 10,547.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,716 : 28,081.30 = 7,030.14 : x
  2. Step 2: Convert to fraction form
    18,716/28,081.30 = 7,030.14/x
  3. Step 3: Cross multiply
    18,716x = 28,081.30 × 7,030.14
  4. Step 4: Simplify right side
    18,716x = 197,415,470.38
  5. Step 5: Solve for x
    x = 197,415,470.38/18,716
  6. Step 6: Final answer
    x = 10,547.95

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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.