Home / 15,389.22-21,237.12-8,674.86

Finding the Fourth Proportional to 15,389.22, 21,237.12 and 8,674.86

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Solution

The fourth proportional to 15,389.22, 21,237.12 and 8,674.86 is: 11,971.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,389.22 : 21,237.12 = 8,674.86 : x
  2. Step 2: Convert to fraction form
    15,389.22/21,237.12 = 8,674.86/x
  3. Step 3: Cross multiply
    15,389.22x = 21,237.12 × 8,674.86
  4. Step 4: Simplify right side
    15,389.22x = 184,229,042.80
  5. Step 5: Solve for x
    x = 184,229,042.80/15,389.22
  6. Step 6: Final answer
    x = 11,971.30

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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.