Home / 9,815.69-13,538.80-6,457.43

Finding the Fourth Proportional to 9,815.69, 13,538.80 and 6,457.43

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Solution

The fourth proportional to 9,815.69, 13,538.80 and 6,457.43 is: 8,906.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,815.69 : 13,538.80 = 6,457.43 : x
  2. Step 2: Convert to fraction form
    9,815.69/13,538.80 = 6,457.43/x
  3. Step 3: Cross multiply
    9,815.69x = 13,538.80 × 6,457.43
  4. Step 4: Simplify right side
    9,815.69x = 87,425,821.00
  5. Step 5: Solve for x
    x = 87,425,821.00/9,815.69
  6. Step 6: Final answer
    x = 8,906.74

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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.