Home / 15,296.10-21,107.37-8,580.79

Finding the Fourth Proportional to 15,296.10, 21,107.37 and 8,580.79

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Solution

The fourth proportional to 15,296.10, 21,107.37 and 8,580.79 is: 11,840.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,296.10 : 21,107.37 = 8,580.79 : x
  2. Step 2: Convert to fraction form
    15,296.10/21,107.37 = 8,580.79/x
  3. Step 3: Cross multiply
    15,296.10x = 21,107.37 × 8,580.79
  4. Step 4: Simplify right side
    15,296.10x = 181,117,909.42
  5. Step 5: Solve for x
    x = 181,117,909.42/15,296.10
  6. Step 6: Final answer
    x = 11,840.79

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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.