Home / 19,643.91-27,117.87-12,574.43

Finding the Fourth Proportional to 19,643.91, 27,117.87 and 12,574.43

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Solution

The fourth proportional to 19,643.91, 27,117.87 and 12,574.43 is: 17,358.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,643.91 : 27,117.87 = 12,574.43 : x
  2. Step 2: Convert to fraction form
    19,643.91/27,117.87 = 12,574.43/x
  3. Step 3: Cross multiply
    19,643.91x = 27,117.87 × 12,574.43
  4. Step 4: Simplify right side
    19,643.91x = 340,991,758.06
  5. Step 5: Solve for x
    x = 340,991,758.06/19,643.91
  6. Step 6: Final answer
    x = 17,358.65

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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.