Home / 28,240.22-38,969.34-15,491.36

Finding the Fourth Proportional to 28,240.22, 38,969.34 and 15,491.36

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Solution

The fourth proportional to 28,240.22, 38,969.34 and 15,491.36 is: 21,376.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,240.22 : 38,969.34 = 15,491.36 : x
  2. Step 2: Convert to fraction form
    28,240.22/38,969.34 = 15,491.36/x
  3. Step 3: Cross multiply
    28,240.22x = 38,969.34 × 15,491.36
  4. Step 4: Simplify right side
    28,240.22x = 603,688,074.90
  5. Step 5: Solve for x
    x = 603,688,074.90/28,240.22
  6. Step 6: Final answer
    x = 21,376.89

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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.