Home / 15,519.94-21,417.53-8,446.41

Finding the Fourth Proportional to 15,519.94, 21,417.53 and 8,446.41

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Solution

The fourth proportional to 15,519.94, 21,417.53 and 8,446.41 is: 11,656.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,519.94 : 21,417.53 = 8,446.41 : x
  2. Step 2: Convert to fraction form
    15,519.94/21,417.53 = 8,446.41/x
  3. Step 3: Cross multiply
    15,519.94x = 21,417.53 × 8,446.41
  4. Step 4: Simplify right side
    15,519.94x = 180,901,197.34
  5. Step 5: Solve for x
    x = 180,901,197.34/15,519.94
  6. Step 6: Final answer
    x = 11,656.05

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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.