Home / 12,790.49-17,646.19-7,751.07

Finding the Fourth Proportional to 12,790.49, 17,646.19 and 7,751.07

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Solution

The fourth proportional to 12,790.49, 17,646.19 and 7,751.07 is: 10,693.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,790.49 : 17,646.19 = 7,751.07 : x
  2. Step 2: Convert to fraction form
    12,790.49/17,646.19 = 7,751.07/x
  3. Step 3: Cross multiply
    12,790.49x = 17,646.19 × 7,751.07
  4. Step 4: Simplify right side
    12,790.49x = 136,776,834.55
  5. Step 5: Solve for x
    x = 136,776,834.55/12,790.49
  6. Step 6: Final answer
    x = 10,693.64

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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.