Home / 12,106.80-16,709.38-10,087.02

Finding the Fourth Proportional to 12,106.80, 16,709.38 and 10,087.02

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Solution

The fourth proportional to 12,106.80, 16,709.38 and 10,087.02 is: 13,921.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,106.80 : 16,709.38 = 10,087.02 : x
  2. Step 2: Convert to fraction form
    12,106.80/16,709.38 = 10,087.02/x
  3. Step 3: Cross multiply
    12,106.80x = 16,709.38 × 10,087.02
  4. Step 4: Simplify right side
    12,106.80x = 168,547,825.03
  5. Step 5: Solve for x
    x = 168,547,825.03/12,106.80
  6. Step 6: Final answer
    x = 13,921.75

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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.