Home / 12,436.36-18,660.86-6,888.60

Finding the Fourth Proportional to 12,436.36, 18,660.86 and 6,888.60

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Solution

The fourth proportional to 12,436.36, 18,660.86 and 6,888.60 is: 10,336.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,436.36 : 18,660.86 = 6,888.60 : x
  2. Step 2: Convert to fraction form
    12,436.36/18,660.86 = 6,888.60/x
  3. Step 3: Cross multiply
    12,436.36x = 18,660.86 × 6,888.60
  4. Step 4: Simplify right side
    12,436.36x = 128,547,200.20
  5. Step 5: Solve for x
    x = 128,547,200.20/12,436.36
  6. Step 6: Final answer
    x = 10,336.40

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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.