Home / 19,779.69-29,666.22-8,683.40

Finding the Fourth Proportional to 19,779.69, 29,666.22 and 8,683.40

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Solution

The fourth proportional to 19,779.69, 29,666.22 and 8,683.40 is: 13,023.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,779.69 : 29,666.22 = 8,683.40 : x
  2. Step 2: Convert to fraction form
    19,779.69/29,666.22 = 8,683.40/x
  3. Step 3: Cross multiply
    19,779.69x = 29,666.22 × 8,683.40
  4. Step 4: Simplify right side
    19,779.69x = 257,603,473.85
  5. Step 5: Solve for x
    x = 257,603,473.85/19,779.69
  6. Step 6: Final answer
    x = 13,023.64

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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.