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Finding the Fourth Proportional to 19,428.53, 26,810.53 and 10,930.50

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Solution

The fourth proportional to 19,428.53, 26,810.53 and 10,930.50 is: 15,083.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,428.53 : 26,810.53 = 10,930.50 : x
  2. Step 2: Convert to fraction form
    19,428.53/26,810.53 = 10,930.50/x
  3. Step 3: Cross multiply
    19,428.53x = 26,810.53 × 10,930.50
  4. Step 4: Simplify right side
    19,428.53x = 293,052,470.84
  5. Step 5: Solve for x
    x = 293,052,470.84/19,428.53
  6. Step 6: Final answer
    x = 15,083.62

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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.