Home / 19,686.06-27,178.07-12,969.23

Finding the Fourth Proportional to 19,686.06, 27,178.07 and 12,969.23

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Solution

The fourth proportional to 19,686.06, 27,178.07 and 12,969.23 is: 17,904.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,686.06 : 27,178.07 = 12,969.23 : x
  2. Step 2: Convert to fraction form
    19,686.06/27,178.07 = 12,969.23/x
  3. Step 3: Cross multiply
    19,686.06x = 27,178.07 × 12,969.23
  4. Step 4: Simplify right side
    19,686.06x = 352,478,440.05
  5. Step 5: Solve for x
    x = 352,478,440.05/19,686.06
  6. Step 6: Final answer
    x = 17,904.98

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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.