Home / 12,603.12-18,904.68-5,211.60

Finding the Fourth Proportional to 12,603.12, 18,904.68 and 5,211.60

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Solution

The fourth proportional to 12,603.12, 18,904.68 and 5,211.60 is: 7,817.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,603.12 : 18,904.68 = 5,211.60 : x
  2. Step 2: Convert to fraction form
    12,603.12/18,904.68 = 5,211.60/x
  3. Step 3: Cross multiply
    12,603.12x = 18,904.68 × 5,211.60
  4. Step 4: Simplify right side
    12,603.12x = 98,523,630.29
  5. Step 5: Solve for x
    x = 98,523,630.29/12,603.12
  6. Step 6: Final answer
    x = 7,817.40

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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.