Home / 21,138,386.42-31,699,802.35-7,301,823.95

Finding the Fourth Proportional to 21,138,386.42, 31,699,802.35 and 7,301,823.95

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Solution

The fourth proportional to 21,138,386.42, 31,699,802.35 and 7,301,823.95 is: 10,950,049.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,138,386.42 : 31,699,802.35 = 7,301,823.95 : x
  2. Step 2: Convert to fraction form
    21,138,386.42/31,699,802.35 = 7,301,823.95/x
  3. Step 3: Cross multiply
    21,138,386.42x = 31,699,802.35 × 7,301,823.95
  4. Step 4: Simplify right side
    21,138,386.42x = 231,466,376,070,491.22
  5. Step 5: Solve for x
    x = 231,466,376,070,491.22/21,138,386.42
  6. Step 6: Final answer
    x = 10,950,049.42

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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.