Home / 15,783.09-21,779.92-9,063.98

Finding the Fourth Proportional to 15,783.09, 21,779.92 and 9,063.98

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Solution

The fourth proportional to 15,783.09, 21,779.92 and 9,063.98 is: 12,507.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,783.09 : 21,779.92 = 9,063.98 : x
  2. Step 2: Convert to fraction form
    15,783.09/21,779.92 = 9,063.98/x
  3. Step 3: Cross multiply
    15,783.09x = 21,779.92 × 9,063.98
  4. Step 4: Simplify right side
    15,783.09x = 197,412,759.28
  5. Step 5: Solve for x
    x = 197,412,759.28/15,783.09
  6. Step 6: Final answer
    x = 12,507.87

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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.