Home / 28,391,280.84-39,179,985.93-15,338,532.20

Finding the Fourth Proportional to 28,391,280.84, 39,179,985.93 and 15,338,532.20

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Solution

The fourth proportional to 28,391,280.84, 39,179,985.93 and 15,338,532.20 is: 21,167,184.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,391,280.84 : 39,179,985.93 = 15,338,532.20 : x
  2. Step 2: Convert to fraction form
    28,391,280.84/39,179,985.93 = 15,338,532.20/x
  3. Step 3: Cross multiply
    28,391,280.84x = 39,179,985.93 × 15,338,532.20
  4. Step 4: Simplify right side
    28,391,280.84x = 600,963,475,586,952
  5. Step 5: Solve for x
    x = 600,963,475,586,952/28,391,280.84
  6. Step 6: Final answer
    x = 21,167,184.35

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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.