Home / 28,075,142.49-38,742,982.86-15,685,328.98

Finding the Fourth Proportional to 28,075,142.49, 38,742,982.86 and 15,685,328.98

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Solution

The fourth proportional to 28,075,142.49, 38,742,982.86 and 15,685,328.98 is: 21,645,355.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,075,142.49 : 38,742,982.86 = 15,685,328.98 : x
  2. Step 2: Convert to fraction form
    28,075,142.49/38,742,982.86 = 15,685,328.98/x
  3. Step 3: Cross multiply
    28,075,142.49x = 38,742,982.86 × 15,685,328.98
  4. Step 4: Simplify right side
    28,075,142.49x = 607,696,431,825,601.25
  5. Step 5: Solve for x
    x = 607,696,431,825,601.25/28,075,142.49
  6. Step 6: Final answer
    x = 21,645,355.21

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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.