Home / 15,686.37-21,647.23-8,613.25

Finding the Fourth Proportional to 15,686.37, 21,647.23 and 8,613.25

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Solution

The fourth proportional to 15,686.37, 21,647.23 and 8,613.25 is: 11,886.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,686.37 : 21,647.23 = 8,613.25 : x
  2. Step 2: Convert to fraction form
    15,686.37/21,647.23 = 8,613.25/x
  3. Step 3: Cross multiply
    15,686.37x = 21,647.23 × 8,613.25
  4. Step 4: Simplify right side
    15,686.37x = 186,452,852.50
  5. Step 5: Solve for x
    x = 186,452,852.50/15,686.37
  6. Step 6: Final answer
    x = 11,886.30

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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.