Home / 15,486.02-21,370.80-8,412.44

Finding the Fourth Proportional to 15,486.02, 21,370.80 and 8,412.44

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Solution

The fourth proportional to 15,486.02, 21,370.80 and 8,412.44 is: 11,609.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,486.02 : 21,370.80 = 8,412.44 : x
  2. Step 2: Convert to fraction form
    15,486.02/21,370.80 = 8,412.44/x
  3. Step 3: Cross multiply
    15,486.02x = 21,370.80 × 8,412.44
  4. Step 4: Simplify right side
    15,486.02x = 179,780,572.75
  5. Step 5: Solve for x
    x = 179,780,572.75/15,486.02
  6. Step 6: Final answer
    x = 11,609.22

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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.