Home / 15,684.48-21,645.02-8,611.20

Finding the Fourth Proportional to 15,684.48, 21,645.02 and 8,611.20

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Solution

The fourth proportional to 15,684.48, 21,645.02 and 8,611.20 is: 11,883.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,684.48 : 21,645.02 = 8,611.20 : x
  2. Step 2: Convert to fraction form
    15,684.48/21,645.02 = 8,611.20/x
  3. Step 3: Cross multiply
    15,684.48x = 21,645.02 × 8,611.20
  4. Step 4: Simplify right side
    15,684.48x = 186,389,596.22
  5. Step 5: Solve for x
    x = 186,389,596.22/15,684.48
  6. Step 6: Final answer
    x = 11,883.70

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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.