Home / 13,298.96-18,351.24-7,920.33

Finding the Fourth Proportional to 13,298.96, 18,351.24 and 7,920.33

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Solution

The fourth proportional to 13,298.96, 18,351.24 and 7,920.33 is: 10,929.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,298.96 : 18,351.24 = 7,920.33 : x
  2. Step 2: Convert to fraction form
    13,298.96/18,351.24 = 7,920.33/x
  3. Step 3: Cross multiply
    13,298.96x = 18,351.24 × 7,920.33
  4. Step 4: Simplify right side
    13,298.96x = 145,347,876.71
  5. Step 5: Solve for x
    x = 145,347,876.71/13,298.96
  6. Step 6: Final answer
    x = 10,929.27

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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.