Home / 15,504.05-21,395.35-8,430.41

Finding the Fourth Proportional to 15,504.05, 21,395.35 and 8,430.41

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Solution

The fourth proportional to 15,504.05, 21,395.35 and 8,430.41 is: 11,633.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,504.05 : 21,395.35 = 8,430.41 : x
  2. Step 2: Convert to fraction form
    15,504.05/21,395.35 = 8,430.41/x
  3. Step 3: Cross multiply
    15,504.05x = 21,395.35 × 8,430.41
  4. Step 4: Simplify right side
    15,504.05x = 180,371,530.44
  5. Step 5: Solve for x
    x = 180,371,530.44/15,504.05
  6. Step 6: Final answer
    x = 11,633.83

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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.