Home / 28,554.96-39,418.20-21,483.12

Finding the Fourth Proportional to 28,554.96, 39,418.20 and 21,483.12

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Solution

The fourth proportional to 28,554.96, 39,418.20 and 21,483.12 is: 29,656.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,554.96 : 39,418.20 = 21,483.12 : x
  2. Step 2: Convert to fraction form
    28,554.96/39,418.20 = 21,483.12/x
  3. Step 3: Cross multiply
    28,554.96x = 39,418.20 × 21,483.12
  4. Step 4: Simplify right side
    28,554.96x = 846,825,920.78
  5. Step 5: Solve for x
    x = 846,825,920.78/28,554.96
  6. Step 6: Final answer
    x = 29,656.00

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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.