Home / 21,212,668.23-31,805,980.14-8,243,675.88

Finding the Fourth Proportional to 21,212,668.23, 31,805,980.14 and 8,243,675.88

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Solution

The fourth proportional to 21,212,668.23, 31,805,980.14 and 8,243,675.88 is: 12,360,453.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,212,668.23 : 31,805,980.14 = 8,243,675.88 : x
  2. Step 2: Convert to fraction form
    21,212,668.23/31,805,980.14 = 8,243,675.88/x
  3. Step 3: Cross multiply
    21,212,668.23x = 31,805,980.14 × 8,243,675.88
  4. Step 4: Simplify right side
    21,212,668.23x = 262,198,191,319,877.03
  5. Step 5: Solve for x
    x = 262,198,191,319,877.03/21,212,668.23
  6. Step 6: Final answer
    x = 12,360,453.13

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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.