Home / 12,078.51-16,666.74-6,700.88

Finding the Fourth Proportional to 12,078.51, 16,666.74 and 6,700.88

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Solution

The fourth proportional to 12,078.51, 16,666.74 and 6,700.88 is: 9,246.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,078.51 : 16,666.74 = 6,700.88 : x
  2. Step 2: Convert to fraction form
    12,078.51/16,666.74 = 6,700.88/x
  3. Step 3: Cross multiply
    12,078.51x = 16,666.74 × 6,700.88
  4. Step 4: Simplify right side
    12,078.51x = 111,681,741.40
  5. Step 5: Solve for x
    x = 111,681,741.40/12,078.51
  6. Step 6: Final answer
    x = 9,246.32

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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.