Home / 12,425.68-18,638.67-4,931.08

Finding the Fourth Proportional to 12,425.68, 18,638.67 and 4,931.08

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Solution

The fourth proportional to 12,425.68, 18,638.67 and 4,931.08 is: 7,396.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,425.68 : 18,638.67 = 4,931.08 : x
  2. Step 2: Convert to fraction form
    12,425.68/18,638.67 = 4,931.08/x
  3. Step 3: Cross multiply
    12,425.68x = 18,638.67 × 4,931.08
  4. Step 4: Simplify right side
    12,425.68x = 91,908,772.86
  5. Step 5: Solve for x
    x = 91,908,772.86/12,425.68
  6. Step 6: Final answer
    x = 7,396.68

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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.