Home / 28,586.96-39,436.77-18,518.72

Finding the Fourth Proportional to 28,586.96, 39,436.77 and 18,518.72

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Solution

The fourth proportional to 28,586.96, 39,436.77 and 18,518.72 is: 25,547.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,586.96 : 39,436.77 = 18,518.72 : x
  2. Step 2: Convert to fraction form
    28,586.96/39,436.77 = 18,518.72/x
  3. Step 3: Cross multiply
    28,586.96x = 39,436.77 × 18,518.72
  4. Step 4: Simplify right side
    28,586.96x = 730,318,501.33
  5. Step 5: Solve for x
    x = 730,318,501.33/28,586.96
  6. Step 6: Final answer
    x = 25,547.26

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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.