Home / 28,775,185.11-39,710,034.36-15,722,442.81

Finding the Fourth Proportional to 28,775,185.11, 39,710,034.36 and 15,722,442.81

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Solution

The fourth proportional to 28,775,185.11, 39,710,034.36 and 15,722,442.81 is: 21,697,123.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,775,185.11 : 39,710,034.36 = 15,722,442.81 : x
  2. Step 2: Convert to fraction form
    28,775,185.11/39,710,034.36 = 15,722,442.81/x
  3. Step 3: Cross multiply
    28,775,185.11x = 39,710,034.36 × 15,722,442.81
  4. Step 4: Simplify right side
    28,775,185.11x = 624,338,744,208,235
  5. Step 5: Solve for x
    x = 624,338,744,208,235/28,775,185.11
  6. Step 6: Final answer
    x = 21,697,123.47

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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.