Home / 15,779.20-21,759.36-10,474.24

Finding the Fourth Proportional to 15,779.20, 21,759.36 and 10,474.24

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Solution

The fourth proportional to 15,779.20, 21,759.36 and 10,474.24 is: 14,443.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,779.20 : 21,759.36 = 10,474.24 : x
  2. Step 2: Convert to fraction form
    15,779.20/21,759.36 = 10,474.24/x
  3. Step 3: Cross multiply
    15,779.20x = 21,759.36 × 10,474.24
  4. Step 4: Simplify right side
    15,779.20x = 227,912,758.89
  5. Step 5: Solve for x
    x = 227,912,758.89/15,779.20
  6. Step 6: Final answer
    x = 14,443.87

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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.