Home / 28,611.96-39,483.45-15,865.68

Finding the Fourth Proportional to 28,611.96, 39,483.45 and 15,865.68

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Solution

The fourth proportional to 28,611.96, 39,483.45 and 15,865.68 is: 21,894.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,611.96 : 39,483.45 = 15,865.68 : x
  2. Step 2: Convert to fraction form
    28,611.96/39,483.45 = 15,865.68/x
  3. Step 3: Cross multiply
    28,611.96x = 39,483.45 × 15,865.68
  4. Step 4: Simplify right side
    28,611.96x = 626,431,783.00
  5. Step 5: Solve for x
    x = 626,431,783.00/28,611.96
  6. Step 6: Final answer
    x = 21,894.05

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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.