Home / 10,558.47-15,821.28-3,981.06

Finding the Fourth Proportional to 10,558.47, 15,821.28 and 3,981.06

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Solution

The fourth proportional to 10,558.47, 15,821.28 and 3,981.06 is: 5,965.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,558.47 : 15,821.28 = 3,981.06 : x
  2. Step 2: Convert to fraction form
    10,558.47/15,821.28 = 3,981.06/x
  3. Step 3: Cross multiply
    10,558.47x = 15,821.28 × 3,981.06
  4. Step 4: Simplify right side
    10,558.47x = 62,985,464.96
  5. Step 5: Solve for x
    x = 62,985,464.96/10,558.47
  6. Step 6: Final answer
    x = 5,965.40

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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.