Home / 12,790.16-17,646.36-7,200.08

Finding the Fourth Proportional to 12,790.16, 17,646.36 and 7,200.08

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Solution

The fourth proportional to 12,790.16, 17,646.36 and 7,200.08 is: 9,933.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,790.16 : 17,646.36 = 7,200.08 : x
  2. Step 2: Convert to fraction form
    12,790.16/17,646.36 = 7,200.08/x
  3. Step 3: Cross multiply
    12,790.16x = 17,646.36 × 7,200.08
  4. Step 4: Simplify right side
    12,790.16x = 127,055,203.71
  5. Step 5: Solve for x
    x = 127,055,203.71/12,790.16
  6. Step 6: Final answer
    x = 9,933.82

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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.