Home / 28,556.42-39,409.15-15,981.17

Finding the Fourth Proportional to 28,556.42, 39,409.15 and 15,981.17

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Solution

The fourth proportional to 28,556.42, 39,409.15 and 15,981.17 is: 22,054.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,556.42 : 39,409.15 = 15,981.17 : x
  2. Step 2: Convert to fraction form
    28,556.42/39,409.15 = 15,981.17/x
  3. Step 3: Cross multiply
    28,556.42x = 39,409.15 × 15,981.17
  4. Step 4: Simplify right side
    28,556.42x = 629,804,325.71
  5. Step 5: Solve for x
    x = 629,804,325.71/28,556.42
  6. Step 6: Final answer
    x = 22,054.74

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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.