Home / 12,717.81-17,551.69-7,412.51

Finding the Fourth Proportional to 12,717.81, 17,551.69 and 7,412.51

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Solution

The fourth proportional to 12,717.81, 17,551.69 and 7,412.51 is: 10,229.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,717.81 : 17,551.69 = 7,412.51 : x
  2. Step 2: Convert to fraction form
    12,717.81/17,551.69 = 7,412.51/x
  3. Step 3: Cross multiply
    12,717.81x = 17,551.69 × 7,412.51
  4. Step 4: Simplify right side
    12,717.81x = 130,102,102.99
  5. Step 5: Solve for x
    x = 130,102,102.99/12,717.81
  6. Step 6: Final answer
    x = 10,229.91

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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.