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Finding the Fourth Proportional to 28,502,518.04, 39,333,978.78 and 15,450,210.44

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Solution

The fourth proportional to 28,502,518.04, 39,333,978.78 and 15,450,210.44 is: 21,321,563.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,502,518.04 : 39,333,978.78 = 15,450,210.44 : x
  2. Step 2: Convert to fraction form
    28,502,518.04/39,333,978.78 = 15,450,210.44/x
  3. Step 3: Cross multiply
    28,502,518.04x = 39,333,978.78 × 15,450,210.44
  4. Step 4: Simplify right side
    28,502,518.04x = 607,718,249,593,494.50
  5. Step 5: Solve for x
    x = 607,718,249,593,494.50/28,502,518.04
  6. Step 6: Final answer
    x = 21,321,563.55

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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.