Home / 21,405,870.48-29,540,121.12-12,238,705.20

Finding the Fourth Proportional to 21,405,870.48, 29,540,121.12 and 12,238,705.20

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Solution

The fourth proportional to 21,405,870.48, 29,540,121.12 and 12,238,705.20 is: 16,889,424.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,405,870.48 : 29,540,121.12 = 12,238,705.20 : x
  2. Step 2: Convert to fraction form
    21,405,870.48/29,540,121.12 = 12,238,705.20/x
  3. Step 3: Cross multiply
    21,405,870.48x = 29,540,121.12 × 12,238,705.20
  4. Step 4: Simplify right side
    21,405,870.48x = 361,532,833,959,973.81
  5. Step 5: Solve for x
    x = 361,532,833,959,973.81/21,405,870.48
  6. Step 6: Final answer
    x = 16,889,424.53

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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.