Home / 8,421.12-11,613.60-6,533.28

Finding the Fourth Proportional to 8,421.12, 11,613.60 and 6,533.28

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Solution

The fourth proportional to 8,421.12, 11,613.60 and 6,533.28 is: 9,010.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,421.12 : 11,613.60 = 6,533.28 : x
  2. Step 2: Convert to fraction form
    8,421.12/11,613.60 = 6,533.28/x
  3. Step 3: Cross multiply
    8,421.12x = 11,613.60 × 6,533.28
  4. Step 4: Simplify right side
    8,421.12x = 75,874,900.61
  5. Step 5: Solve for x
    x = 75,874,900.61/8,421.12
  6. Step 6: Final answer
    x = 9,010.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.