Home / 10,905.54-16,360.47-3,980.58

Finding the Fourth Proportional to 10,905.54, 16,360.47 and 3,980.58

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Solution

The fourth proportional to 10,905.54, 16,360.47 and 3,980.58 is: 5,971.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,905.54 : 16,360.47 = 3,980.58 : x
  2. Step 2: Convert to fraction form
    10,905.54/16,360.47 = 3,980.58/x
  3. Step 3: Cross multiply
    10,905.54x = 16,360.47 × 3,980.58
  4. Step 4: Simplify right side
    10,905.54x = 65,124,159.67
  5. Step 5: Solve for x
    x = 65,124,159.67/10,905.54
  6. Step 6: Final answer
    x = 5,971.66

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1.5x scale

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.