Home / 12,280.07-18,425.60-6,435.34

Finding the Fourth Proportional to 12,280.07, 18,425.60 and 6,435.34

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Solution

The fourth proportional to 12,280.07, 18,425.60 and 6,435.34 is: 9,655.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,280.07 : 18,425.60 = 6,435.34 : x
  2. Step 2: Convert to fraction form
    12,280.07/18,425.60 = 6,435.34/x
  3. Step 3: Cross multiply
    12,280.07x = 18,425.60 × 6,435.34
  4. Step 4: Simplify right side
    12,280.07x = 118,575,000.70
  5. Step 5: Solve for x
    x = 118,575,000.70/12,280.07
  6. Step 6: Final answer
    x = 9,655.89

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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.