Home / 15,355.54-21,190.40-8,641.17

Finding the Fourth Proportional to 15,355.54, 21,190.40 and 8,641.17

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Solution

The fourth proportional to 15,355.54, 21,190.40 and 8,641.17 is: 11,924.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,355.54 : 21,190.40 = 8,641.17 : x
  2. Step 2: Convert to fraction form
    15,355.54/21,190.40 = 8,641.17/x
  3. Step 3: Cross multiply
    15,355.54x = 21,190.40 × 8,641.17
  4. Step 4: Simplify right side
    15,355.54x = 183,109,742.82
  5. Step 5: Solve for x
    x = 183,109,742.82/15,355.54
  6. Step 6: Final answer
    x = 11,924.67

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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.