Home / 15,389,394.26-21,237,384.75-8,420,726.53

Finding the Fourth Proportional to 15,389,394.26, 21,237,384.75 and 8,420,726.53

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Solution

The fourth proportional to 15,389,394.26, 21,237,384.75 and 8,420,726.53 is: 11,620,613.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,389,394.26 : 21,237,384.75 = 8,420,726.53 : x
  2. Step 2: Convert to fraction form
    15,389,394.26/21,237,384.75 = 8,420,726.53/x
  3. Step 3: Cross multiply
    15,389,394.26x = 21,237,384.75 × 8,420,726.53
  4. Step 4: Simplify right side
    15,389,394.26x = 178,834,209,192,142.41
  5. Step 5: Solve for x
    x = 178,834,209,192,142.41/15,389,394.26
  6. Step 6: Final answer
    x = 11,620,613.92

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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.