Home / 19,428.31-26,810.80-10,930.40

Finding the Fourth Proportional to 19,428.31, 26,810.80 and 10,930.40

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Solution

The fourth proportional to 19,428.31, 26,810.80 and 10,930.40 is: 15,083.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,428.31 : 26,810.80 = 10,930.40 : x
  2. Step 2: Convert to fraction form
    19,428.31/26,810.80 = 10,930.40/x
  3. Step 3: Cross multiply
    19,428.31x = 26,810.80 × 10,930.40
  4. Step 4: Simplify right side
    19,428.31x = 293,052,768.32
  5. Step 5: Solve for x
    x = 293,052,768.32/19,428.31
  6. Step 6: Final answer
    x = 15,083.80

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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.