Home / 10,388.47-15,579.06-2,990.95

Finding the Fourth Proportional to 10,388.47, 15,579.06 and 2,990.95

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Solution

The fourth proportional to 10,388.47, 15,579.06 and 2,990.95 is: 4,485.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,388.47 : 15,579.06 = 2,990.95 : x
  2. Step 2: Convert to fraction form
    10,388.47/15,579.06 = 2,990.95/x
  3. Step 3: Cross multiply
    10,388.47x = 15,579.06 × 2,990.95
  4. Step 4: Simplify right side
    10,388.47x = 46,596,189.51
  5. Step 5: Solve for x
    x = 46,596,189.51/10,388.47
  6. Step 6: Final answer
    x = 4,485.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.