Home / 12,130.83-16,740.55-6,825.65

Finding the Fourth Proportional to 12,130.83, 16,740.55 and 6,825.65

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Solution

The fourth proportional to 12,130.83, 16,740.55 and 6,825.65 is: 9,419.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,130.83 : 16,740.55 = 6,825.65 : x
  2. Step 2: Convert to fraction form
    12,130.83/16,740.55 = 6,825.65/x
  3. Step 3: Cross multiply
    12,130.83x = 16,740.55 × 6,825.65
  4. Step 4: Simplify right side
    12,130.83x = 114,265,135.11
  5. Step 5: Solve for x
    x = 114,265,135.11/12,130.83
  6. Step 6: Final answer
    x = 9,419.40

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Half scale
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Double scale
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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.