Home / 12,458.55-18,681.47-4,135.59

Finding the Fourth Proportional to 12,458.55, 18,681.47 and 4,135.59

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Solution

The fourth proportional to 12,458.55, 18,681.47 and 4,135.59 is: 6,201.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,458.55 : 18,681.47 = 4,135.59 : x
  2. Step 2: Convert to fraction form
    12,458.55/18,681.47 = 4,135.59/x
  3. Step 3: Cross multiply
    12,458.55x = 18,681.47 × 4,135.59
  4. Step 4: Simplify right side
    12,458.55x = 77,258,900.52
  5. Step 5: Solve for x
    x = 77,258,900.52/12,458.55
  6. Step 6: Final answer
    x = 6,201.28

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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.