Home / 21,020,416.80-31,530,625.20-12,375,643.20

Finding the Fourth Proportional to 21,020,416.80, 31,530,625.20 and 12,375,643.20

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Solution

The fourth proportional to 21,020,416.80, 31,530,625.20 and 12,375,643.20 is: 18,563,464.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,020,416.80 : 31,530,625.20 = 12,375,643.20 : x
  2. Step 2: Convert to fraction form
    21,020,416.80/31,530,625.20 = 12,375,643.20/x
  3. Step 3: Cross multiply
    21,020,416.80x = 31,530,625.20 × 12,375,643.20
  4. Step 4: Simplify right side
    21,020,416.80x = 390,211,767,348,128.62
  5. Step 5: Solve for x
    x = 390,211,767,348,128.62/21,020,416.80
  6. Step 6: Final answer
    x = 18,563,464.80

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.