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Finding the Fourth Proportional to 12,379.26, 18,547.26 and 10,312.50

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Solution

The fourth proportional to 12,379.26, 18,547.26 and 10,312.50 is: 15,450.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,379.26 : 18,547.26 = 10,312.50 : x
  2. Step 2: Convert to fraction form
    12,379.26/18,547.26 = 10,312.50/x
  3. Step 3: Cross multiply
    12,379.26x = 18,547.26 × 10,312.50
  4. Step 4: Simplify right side
    12,379.26x = 191,268,618.75
  5. Step 5: Solve for x
    x = 191,268,618.75/12,379.26
  6. Step 6: Final answer
    x = 15,450.73

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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.