Home / 28,835.18-39,770.16-18,220.94

Finding the Fourth Proportional to 28,835.18, 39,770.16 and 18,220.94

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Solution

The fourth proportional to 28,835.18, 39,770.16 and 18,220.94 is: 25,130.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,835.18 : 39,770.16 = 18,220.94 : x
  2. Step 2: Convert to fraction form
    28,835.18/39,770.16 = 18,220.94/x
  3. Step 3: Cross multiply
    28,835.18x = 39,770.16 × 18,220.94
  4. Step 4: Simplify right side
    28,835.18x = 724,649,699.15
  5. Step 5: Solve for x
    x = 724,649,699.15/28,835.18
  6. Step 6: Final answer
    x = 25,130.75

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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.