Home / 21,246,435.80-31,916,892.90-20,443,369.40

Finding the Fourth Proportional to 21,246,435.80, 31,916,892.90 and 20,443,369.40

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Solution

The fourth proportional to 21,246,435.80, 31,916,892.90 and 20,443,369.40 is: 30,710,507.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,246,435.80 : 31,916,892.90 = 20,443,369.40 : x
  2. Step 2: Convert to fraction form
    21,246,435.80/31,916,892.90 = 20,443,369.40/x
  3. Step 3: Cross multiply
    21,246,435.80x = 31,916,892.90 × 20,443,369.40
  4. Step 4: Simplify right side
    21,246,435.80x = 652,488,831,654,937.12
  5. Step 5: Solve for x
    x = 652,488,831,654,937.12/21,246,435.80
  6. Step 6: Final answer
    x = 30,710,507.77

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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.