Home / 15,809.06-21,779.40-11,020.30

Finding the Fourth Proportional to 15,809.06, 21,779.40 and 11,020.30

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Solution

The fourth proportional to 15,809.06, 21,779.40 and 11,020.30 is: 15,182.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,809.06 : 21,779.40 = 11,020.30 : x
  2. Step 2: Convert to fraction form
    15,809.06/21,779.40 = 11,020.30/x
  3. Step 3: Cross multiply
    15,809.06x = 21,779.40 × 11,020.30
  4. Step 4: Simplify right side
    15,809.06x = 240,015,575.44
  5. Step 5: Solve for x
    x = 240,015,575.44/15,809.06
  6. Step 6: Final answer
    x = 15,182.15

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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.