Home / 21,039,973.10-31,559,959.65-12,082,021.10

Finding the Fourth Proportional to 21,039,973.10, 31,559,959.65 and 12,082,021.10

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Solution

The fourth proportional to 21,039,973.10, 31,559,959.65 and 12,082,021.10 is: 18,123,031.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,039,973.10 : 31,559,959.65 = 12,082,021.10 : x
  2. Step 2: Convert to fraction form
    21,039,973.10/31,559,959.65 = 12,082,021.10/x
  3. Step 3: Cross multiply
    21,039,973.10x = 31,559,959.65 × 12,082,021.10
  4. Step 4: Simplify right side
    21,039,973.10x = 381,308,098,406,448.56
  5. Step 5: Solve for x
    x = 381,308,098,406,448.56/21,039,973.10
  6. Step 6: Final answer
    x = 18,123,031.65

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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.