Home / 12,590.75-18,779.27-12,369.35

Finding the Fourth Proportional to 12,590.75, 18,779.27 and 12,369.35

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Solution

The fourth proportional to 12,590.75, 18,779.27 and 12,369.35 is: 18,449.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,590.75 : 18,779.27 = 12,369.35 : x
  2. Step 2: Convert to fraction form
    12,590.75/18,779.27 = 12,369.35/x
  3. Step 3: Cross multiply
    12,590.75x = 18,779.27 × 12,369.35
  4. Step 4: Simplify right side
    12,590.75x = 232,287,348.48
  5. Step 5: Solve for x
    x = 232,287,348.48/12,590.75
  6. Step 6: Final answer
    x = 18,449.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.