Home / 15,595.26-21,520.65-8,520.31

Finding the Fourth Proportional to 15,595.26, 21,520.65 and 8,520.31

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Solution

The fourth proportional to 15,595.26, 21,520.65 and 8,520.31 is: 11,757.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,595.26 : 21,520.65 = 8,520.31 : x
  2. Step 2: Convert to fraction form
    15,595.26/21,520.65 = 8,520.31/x
  3. Step 3: Cross multiply
    15,595.26x = 21,520.65 × 8,520.31
  4. Step 4: Simplify right side
    15,595.26x = 183,362,609.40
  5. Step 5: Solve for x
    x = 183,362,609.40/15,595.26
  6. Step 6: Final answer
    x = 11,757.59

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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.