Home / 11,904.10-16,407.16-7,918.10

Finding the Fourth Proportional to 11,904.10, 16,407.16 and 7,918.10

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Solution

The fourth proportional to 11,904.10, 16,407.16 and 7,918.10 is: 10,913.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,904.10 : 16,407.16 = 7,918.10 : x
  2. Step 2: Convert to fraction form
    11,904.10/16,407.16 = 7,918.10/x
  3. Step 3: Cross multiply
    11,904.10x = 16,407.16 × 7,918.10
  4. Step 4: Simplify right side
    11,904.10x = 129,913,533.60
  5. Step 5: Solve for x
    x = 129,913,533.60/11,904.10
  6. Step 6: Final answer
    x = 10,913.34

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1.5x scale

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.