Home / 12,145.68-16,762.23-7,109.60

Finding the Fourth Proportional to 12,145.68, 16,762.23 and 7,109.60

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Solution

The fourth proportional to 12,145.68, 16,762.23 and 7,109.60 is: 9,811.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,145.68 : 16,762.23 = 7,109.60 : x
  2. Step 2: Convert to fraction form
    12,145.68/16,762.23 = 7,109.60/x
  3. Step 3: Cross multiply
    12,145.68x = 16,762.23 × 7,109.60
  4. Step 4: Simplify right side
    12,145.68x = 119,172,693.26
  5. Step 5: Solve for x
    x = 119,172,693.26/12,145.68
  6. Step 6: Final answer
    x = 9,811.94

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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.