Home / 12,779.15-17,635.20-7,113.77

Finding the Fourth Proportional to 12,779.15, 17,635.20 and 7,113.77

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Solution

The fourth proportional to 12,779.15, 17,635.20 and 7,113.77 is: 9,816.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,779.15 : 17,635.20 = 7,113.77 : x
  2. Step 2: Convert to fraction form
    12,779.15/17,635.20 = 7,113.77/x
  3. Step 3: Cross multiply
    12,779.15x = 17,635.20 × 7,113.77
  4. Step 4: Simplify right side
    12,779.15x = 125,452,668.53
  5. Step 5: Solve for x
    x = 125,452,668.53/12,779.15
  6. Step 6: Final answer
    x = 9,816.98

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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.