Home / 12,438.18-18,656.64-4,646.38

Finding the Fourth Proportional to 12,438.18, 18,656.64 and 4,646.38

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Solution

The fourth proportional to 12,438.18, 18,656.64 and 4,646.38 is: 6,969.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,438.18 : 18,656.64 = 4,646.38 : x
  2. Step 2: Convert to fraction form
    12,438.18/18,656.64 = 4,646.38/x
  3. Step 3: Cross multiply
    12,438.18x = 18,656.64 × 4,646.38
  4. Step 4: Simplify right side
    12,438.18x = 86,685,838.96
  5. Step 5: Solve for x
    x = 86,685,838.96/12,438.18
  6. Step 6: Final answer
    x = 6,969.33

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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.