Home / 12,570.77-18,858.74-3,686.39

Finding the Fourth Proportional to 12,570.77, 18,858.74 and 3,686.39

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Solution

The fourth proportional to 12,570.77, 18,858.74 and 3,686.39 is: 5,530.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,570.77 : 18,858.74 = 3,686.39 : x
  2. Step 2: Convert to fraction form
    12,570.77/18,858.74 = 3,686.39/x
  3. Step 3: Cross multiply
    12,570.77x = 18,858.74 × 3,686.39
  4. Step 4: Simplify right side
    12,570.77x = 69,520,670.55
  5. Step 5: Solve for x
    x = 69,520,670.55/12,570.77
  6. Step 6: Final answer
    x = 5,530.34

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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.