Home / 15,370.56-21,212.48-8,657.28

Finding the Fourth Proportional to 15,370.56, 21,212.48 and 8,657.28

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Solution

The fourth proportional to 15,370.56, 21,212.48 and 8,657.28 is: 11,947.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,370.56 : 21,212.48 = 8,657.28 : x
  2. Step 2: Convert to fraction form
    15,370.56/21,212.48 = 8,657.28/x
  3. Step 3: Cross multiply
    15,370.56x = 21,212.48 × 8,657.28
  4. Step 4: Simplify right side
    15,370.56x = 183,642,378.85
  5. Step 5: Solve for x
    x = 183,642,378.85/15,370.56
  6. Step 6: Final answer
    x = 11,947.67

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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.