Home / 40,690.56-61,012.32-12,603.12

Finding the Fourth Proportional to 40,690.56, 61,012.32 and 12,603.12

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Solution

The fourth proportional to 40,690.56, 61,012.32 and 12,603.12 is: 18,897.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,690.56 : 61,012.32 = 12,603.12 : x
  2. Step 2: Convert to fraction form
    40,690.56/61,012.32 = 12,603.12/x
  3. Step 3: Cross multiply
    40,690.56x = 61,012.32 × 12,603.12
  4. Step 4: Simplify right side
    40,690.56x = 768,945,590.44
  5. Step 5: Solve for x
    x = 768,945,590.44/40,690.56
  6. Step 6: Final answer
    x = 18,897.40

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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.