Home / 28,513.98-39,347.69-15,766.42

Finding the Fourth Proportional to 28,513.98, 39,347.69 and 15,766.42

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Solution

The fourth proportional to 28,513.98, 39,347.69 and 15,766.42 is: 21,756.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,513.98 : 39,347.69 = 15,766.42 : x
  2. Step 2: Convert to fraction form
    28,513.98/39,347.69 = 15,766.42/x
  3. Step 3: Cross multiply
    28,513.98x = 39,347.69 × 15,766.42
  4. Step 4: Simplify right side
    28,513.98x = 620,372,206.57
  5. Step 5: Solve for x
    x = 620,372,206.57/28,513.98
  6. Step 6: Final answer
    x = 21,756.77

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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.