Home / 15,443.90-21,312.60-8,370.26

Finding the Fourth Proportional to 15,443.90, 21,312.60 and 8,370.26

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Solution

The fourth proportional to 15,443.90, 21,312.60 and 8,370.26 is: 11,550.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,443.90 : 21,312.60 = 8,370.26 : x
  2. Step 2: Convert to fraction form
    15,443.90/21,312.60 = 8,370.26/x
  3. Step 3: Cross multiply
    15,443.90x = 21,312.60 × 8,370.26
  4. Step 4: Simplify right side
    15,443.90x = 178,392,003.28
  5. Step 5: Solve for x
    x = 178,392,003.28/15,443.90
  6. Step 6: Final answer
    x = 11,550.97

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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.