Home / 10,357.21-14,288.40-6,998.80

Finding the Fourth Proportional to 10,357.21, 14,288.40 and 6,998.80

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Solution

The fourth proportional to 10,357.21, 14,288.40 and 6,998.80 is: 9,655.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,357.21 : 14,288.40 = 6,998.80 : x
  2. Step 2: Convert to fraction form
    10,357.21/14,288.40 = 6,998.80/x
  3. Step 3: Cross multiply
    10,357.21x = 14,288.40 × 6,998.80
  4. Step 4: Simplify right side
    10,357.21x = 100,001,653.92
  5. Step 5: Solve for x
    x = 100,001,653.92/10,357.21
  6. Step 6: Final answer
    x = 9,655.27

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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.