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Finding the Fourth Proportional to 19,395.69, 26,763.96 and 13,020.99

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Solution

The fourth proportional to 19,395.69, 26,763.96 and 13,020.99 is: 17,967.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,395.69 : 26,763.96 = 13,020.99 : x
  2. Step 2: Convert to fraction form
    19,395.69/26,763.96 = 13,020.99/x
  3. Step 3: Cross multiply
    19,395.69x = 26,763.96 × 13,020.99
  4. Step 4: Simplify right side
    19,395.69x = 348,493,255.52
  5. Step 5: Solve for x
    x = 348,493,255.52/19,395.69
  6. Step 6: Final answer
    x = 17,967.56

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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.