Home / 10,905.10-16,364.81-5,978.19

Finding the Fourth Proportional to 10,905.10, 16,364.81 and 5,978.19

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Solution

The fourth proportional to 10,905.10, 16,364.81 and 5,978.19 is: 8,971.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,905.10 : 16,364.81 = 5,978.19 : x
  2. Step 2: Convert to fraction form
    10,905.10/16,364.81 = 5,978.19/x
  3. Step 3: Cross multiply
    10,905.10x = 16,364.81 × 5,978.19
  4. Step 4: Simplify right side
    10,905.10x = 97,831,943.49
  5. Step 5: Solve for x
    x = 97,831,943.49/10,905.10
  6. Step 6: Final answer
    x = 8,971.21

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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.