Home / 14,777.88-20,391.45-8,490.26

Finding the Fourth Proportional to 14,777.88, 20,391.45 and 8,490.26

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Solution

The fourth proportional to 14,777.88, 20,391.45 and 8,490.26 is: 11,715.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,777.88 : 20,391.45 = 8,490.26 : x
  2. Step 2: Convert to fraction form
    14,777.88/20,391.45 = 8,490.26/x
  3. Step 3: Cross multiply
    14,777.88x = 20,391.45 × 8,490.26
  4. Step 4: Simplify right side
    14,777.88x = 173,128,610.32
  5. Step 5: Solve for x
    x = 173,128,610.32/14,777.88
  6. Step 6: Final answer
    x = 11,715.39

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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.