Home / 21,601,740.12-29,807,953.05-12,781,461.84

Finding the Fourth Proportional to 21,601,740.12, 29,807,953.05 and 12,781,461.84

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Solution

The fourth proportional to 21,601,740.12, 29,807,953.05 and 12,781,461.84 is: 17,636,968.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,601,740.12 : 29,807,953.05 = 12,781,461.84 : x
  2. Step 2: Convert to fraction form
    21,601,740.12/29,807,953.05 = 12,781,461.84/x
  3. Step 3: Cross multiply
    21,601,740.12x = 29,807,953.05 × 12,781,461.84
  4. Step 4: Simplify right side
    21,601,740.12x = 380,989,214,437,086.62
  5. Step 5: Solve for x
    x = 380,989,214,437,086.62/21,601,740.12
  6. Step 6: Final answer
    x = 17,636,968.70

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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.