Home / 12,709.04-17,539-7,120.08

Finding the Fourth Proportional to 12,709.04, 17,539 and 7,120.08

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Solution

The fourth proportional to 12,709.04, 17,539 and 7,120.08 is: 9,826.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,709.04 : 17,539 = 7,120.08 : x
  2. Step 2: Convert to fraction form
    12,709.04/17,539 = 7,120.08/x
  3. Step 3: Cross multiply
    12,709.04x = 17,539 × 7,120.08
  4. Step 4: Simplify right side
    12,709.04x = 124,879,083.12
  5. Step 5: Solve for x
    x = 124,879,083.12/12,709.04
  6. Step 6: Final answer
    x = 9,826.00

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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.