Home / 12,295.86-18,438.35-3,528.74

Finding the Fourth Proportional to 12,295.86, 18,438.35 and 3,528.74

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Solution

The fourth proportional to 12,295.86, 18,438.35 and 3,528.74 is: 5,291.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,295.86 : 18,438.35 = 3,528.74 : x
  2. Step 2: Convert to fraction form
    12,295.86/18,438.35 = 3,528.74/x
  3. Step 3: Cross multiply
    12,295.86x = 18,438.35 × 3,528.74
  4. Step 4: Simplify right side
    12,295.86x = 65,064,143.18
  5. Step 5: Solve for x
    x = 65,064,143.18/12,295.86
  6. Step 6: Final answer
    x = 5,291.55

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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.