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Finding the Fourth Proportional to 19,319, 26,661.84 and 12,242.84

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Solution

The fourth proportional to 19,319, 26,661.84 and 12,242.84 is: 16,896.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,319 : 26,661.84 = 12,242.84 : x
  2. Step 2: Convert to fraction form
    19,319/26,661.84 = 12,242.84/x
  3. Step 3: Cross multiply
    19,319x = 26,661.84 × 12,242.84
  4. Step 4: Simplify right side
    19,319x = 326,416,641.23
  5. Step 5: Solve for x
    x = 326,416,641.23/19,319
  6. Step 6: Final answer
    x = 16,896.15

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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.