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Finding the Fourth Proportional to 19,313.13, 26,631.79 and 14,287.79

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Solution

The fourth proportional to 19,313.13, 26,631.79 and 14,287.79 is: 19,702.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,313.13 : 26,631.79 = 14,287.79 : x
  2. Step 2: Convert to fraction form
    19,313.13/26,631.79 = 14,287.79/x
  3. Step 3: Cross multiply
    19,313.13x = 26,631.79 × 14,287.79
  4. Step 4: Simplify right side
    19,313.13x = 380,509,453.70
  5. Step 5: Solve for x
    x = 380,509,453.70/19,313.13
  6. Step 6: Final answer
    x = 19,702.11

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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.