Home / 12,421.99-17,141.58-6,756.69

Finding the Fourth Proportional to 12,421.99, 17,141.58 and 6,756.69

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Solution

The fourth proportional to 12,421.99, 17,141.58 and 6,756.69 is: 9,323.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,421.99 : 17,141.58 = 6,756.69 : x
  2. Step 2: Convert to fraction form
    12,421.99/17,141.58 = 6,756.69/x
  3. Step 3: Cross multiply
    12,421.99x = 17,141.58 × 6,756.69
  4. Step 4: Simplify right side
    12,421.99x = 115,820,362.99
  5. Step 5: Solve for x
    x = 115,820,362.99/12,421.99
  6. Step 6: Final answer
    x = 9,323.82

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Half scale
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Double scale
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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.