Home / 12,936.51-19,391.29-8,776.87

Finding the Fourth Proportional to 12,936.51, 19,391.29 and 8,776.87

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Solution

The fourth proportional to 12,936.51, 19,391.29 and 8,776.87 is: 13,156.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,936.51 : 19,391.29 = 8,776.87 : x
  2. Step 2: Convert to fraction form
    12,936.51/19,391.29 = 8,776.87/x
  3. Step 3: Cross multiply
    12,936.51x = 19,391.29 × 8,776.87
  4. Step 4: Simplify right side
    12,936.51x = 170,194,831.46
  5. Step 5: Solve for x
    x = 170,194,831.46/12,936.51
  6. Step 6: Final answer
    x = 13,156.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.