Home / 15,645.56-21,586.57-8,928.77

Finding the Fourth Proportional to 15,645.56, 21,586.57 and 8,928.77

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Solution

The fourth proportional to 15,645.56, 21,586.57 and 8,928.77 is: 12,319.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,645.56 : 21,586.57 = 8,928.77 : x
  2. Step 2: Convert to fraction form
    15,645.56/21,586.57 = 8,928.77/x
  3. Step 3: Cross multiply
    15,645.56x = 21,586.57 × 8,928.77
  4. Step 4: Simplify right side
    15,645.56x = 192,741,388.36
  5. Step 5: Solve for x
    x = 192,741,388.36/15,645.56
  6. Step 6: Final answer
    x = 12,319.24

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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.