Home / 15,427.88-21,290.49-8,354.29

Finding the Fourth Proportional to 15,427.88, 21,290.49 and 8,354.29

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Solution

The fourth proportional to 15,427.88, 21,290.49 and 8,354.29 is: 11,528.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,427.88 : 21,290.49 = 8,354.29 : x
  2. Step 2: Convert to fraction form
    15,427.88/21,290.49 = 8,354.29/x
  3. Step 3: Cross multiply
    15,427.88x = 21,290.49 × 8,354.29
  4. Step 4: Simplify right side
    15,427.88x = 177,866,779.48
  5. Step 5: Solve for x
    x = 177,866,779.48/15,427.88
  6. Step 6: Final answer
    x = 11,528.92

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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.