Home / 28,315.98-39,056.94-21,585.96

Finding the Fourth Proportional to 28,315.98, 39,056.94 and 21,585.96

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Solution

The fourth proportional to 28,315.98, 39,056.94 and 21,585.96 is: 29,774.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,315.98 : 39,056.94 = 21,585.96 : x
  2. Step 2: Convert to fraction form
    28,315.98/39,056.94 = 21,585.96/x
  3. Step 3: Cross multiply
    28,315.98x = 39,056.94 × 21,585.96
  4. Step 4: Simplify right side
    28,315.98x = 843,081,544.56
  5. Step 5: Solve for x
    x = 843,081,544.56/28,315.98
  6. Step 6: Final answer
    x = 29,774.05

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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.