Home / 15,779.36-21,775.65-8,706.26

Finding the Fourth Proportional to 15,779.36, 21,775.65 and 8,706.26

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Solution

The fourth proportional to 15,779.36, 21,775.65 and 8,706.26 is: 12,014.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,779.36 : 21,775.65 = 8,706.26 : x
  2. Step 2: Convert to fraction form
    15,779.36/21,775.65 = 8,706.26/x
  3. Step 3: Cross multiply
    15,779.36x = 21,775.65 × 8,706.26
  4. Step 4: Simplify right side
    15,779.36x = 189,584,470.57
  5. Step 5: Solve for x
    x = 189,584,470.57/15,779.36
  6. Step 6: Final answer
    x = 12,014.71

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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.