Home / 15,283.40-21,091.95-8,571.19

Finding the Fourth Proportional to 15,283.40, 21,091.95 and 8,571.19

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Solution

The fourth proportional to 15,283.40, 21,091.95 and 8,571.19 is: 11,828.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,283.40 : 21,091.95 = 8,571.19 : x
  2. Step 2: Convert to fraction form
    15,283.40/21,091.95 = 8,571.19/x
  3. Step 3: Cross multiply
    15,283.40x = 21,091.95 × 8,571.19
  4. Step 4: Simplify right side
    15,283.40x = 180,783,110.92
  5. Step 5: Solve for x
    x = 180,783,110.92/15,283.40
  6. Step 6: Final answer
    x = 11,828.72

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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.