Home / 21,919,861.85-30,249,467.96-12,130,981.07

Finding the Fourth Proportional to 21,919,861.85, 30,249,467.96 and 12,130,981.07

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Solution

The fourth proportional to 21,919,861.85, 30,249,467.96 and 12,130,981.07 is: 16,740,786.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,919,861.85 : 30,249,467.96 = 12,130,981.07 : x
  2. Step 2: Convert to fraction form
    21,919,861.85/30,249,467.96 = 12,130,981.07/x
  3. Step 3: Cross multiply
    21,919,861.85x = 30,249,467.96 × 12,130,981.07
  4. Step 4: Simplify right side
    21,919,861.85x = 366,955,722,988,429.25
  5. Step 5: Solve for x
    x = 366,955,722,988,429.25/21,919,861.85
  6. Step 6: Final answer
    x = 16,740,786.31

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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.