Home / 13,326.08-19,990.18-7,779.98

Finding the Fourth Proportional to 13,326.08, 19,990.18 and 7,779.98

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Solution

The fourth proportional to 13,326.08, 19,990.18 and 7,779.98 is: 11,670.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,326.08 : 19,990.18 = 7,779.98 : x
  2. Step 2: Convert to fraction form
    13,326.08/19,990.18 = 7,779.98/x
  3. Step 3: Cross multiply
    13,326.08x = 19,990.18 × 7,779.98
  4. Step 4: Simplify right side
    13,326.08x = 155,523,231.12
  5. Step 5: Solve for x
    x = 155,523,231.12/13,326.08
  6. Step 6: Final answer
    x = 11,670.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.