Home / 12,389.40-17,098.55-7,083.18

Finding the Fourth Proportional to 12,389.40, 17,098.55 and 7,083.18

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Solution

The fourth proportional to 12,389.40, 17,098.55 and 7,083.18 is: 9,775.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,389.40 : 17,098.55 = 7,083.18 : x
  2. Step 2: Convert to fraction form
    12,389.40/17,098.55 = 7,083.18/x
  3. Step 3: Cross multiply
    12,389.40x = 17,098.55 × 7,083.18
  4. Step 4: Simplify right side
    12,389.40x = 121,112,071.97
  5. Step 5: Solve for x
    x = 121,112,071.97/12,389.40
  6. Step 6: Final answer
    x = 9,775.46

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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.