Home / 12,855.08-17,740.02-7,818.84

Finding the Fourth Proportional to 12,855.08, 17,740.02 and 7,818.84

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Solution

The fourth proportional to 12,855.08, 17,740.02 and 7,818.84 is: 10,790.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,855.08 : 17,740.02 = 7,818.84 : x
  2. Step 2: Convert to fraction form
    12,855.08/17,740.02 = 7,818.84/x
  3. Step 3: Cross multiply
    12,855.08x = 17,740.02 × 7,818.84
  4. Step 4: Simplify right side
    12,855.08x = 138,706,377.98
  5. Step 5: Solve for x
    x = 138,706,377.98/12,855.08
  6. Step 6: Final answer
    x = 10,790.01

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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.