Home / 15,628.70-21,567.56-8,555.06

Finding the Fourth Proportional to 15,628.70, 21,567.56 and 8,555.06

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Solution

The fourth proportional to 15,628.70, 21,567.56 and 8,555.06 is: 11,805.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,628.70 : 21,567.56 = 8,555.06 : x
  2. Step 2: Convert to fraction form
    15,628.70/21,567.56 = 8,555.06/x
  3. Step 3: Cross multiply
    15,628.70x = 21,567.56 × 8,555.06
  4. Step 4: Simplify right side
    15,628.70x = 184,511,769.85
  5. Step 5: Solve for x
    x = 184,511,769.85/15,628.70
  6. Step 6: Final answer
    x = 11,805.96

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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.