Home / 12,306.72-18,459.36-6,459.60

Finding the Fourth Proportional to 12,306.72, 18,459.36 and 6,459.60

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Solution

The fourth proportional to 12,306.72, 18,459.36 and 6,459.60 is: 9,689.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,306.72 : 18,459.36 = 6,459.60 : x
  2. Step 2: Convert to fraction form
    12,306.72/18,459.36 = 6,459.60/x
  3. Step 3: Cross multiply
    12,306.72x = 18,459.36 × 6,459.60
  4. Step 4: Simplify right side
    12,306.72x = 119,240,081.86
  5. Step 5: Solve for x
    x = 119,240,081.86/12,306.72
  6. Step 6: Final answer
    x = 9,689.02

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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.