Home / 19,779.12-29,667.96-6,631.20

Finding the Fourth Proportional to 19,779.12, 29,667.96 and 6,631.20

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Solution

The fourth proportional to 19,779.12, 29,667.96 and 6,631.20 is: 9,946.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,779.12 : 29,667.96 = 6,631.20 : x
  2. Step 2: Convert to fraction form
    19,779.12/29,667.96 = 6,631.20/x
  3. Step 3: Cross multiply
    19,779.12x = 29,667.96 × 6,631.20
  4. Step 4: Simplify right side
    19,779.12x = 196,734,176.35
  5. Step 5: Solve for x
    x = 196,734,176.35/19,779.12
  6. Step 6: Final answer
    x = 9,946.56

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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.