Home / 12,277.47-18,312.92-11,908.51

Finding the Fourth Proportional to 12,277.47, 18,312.92 and 11,908.51

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Solution

The fourth proportional to 12,277.47, 18,312.92 and 11,908.51 is: 17,762.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,277.47 : 18,312.92 = 11,908.51 : x
  2. Step 2: Convert to fraction form
    12,277.47/18,312.92 = 11,908.51/x
  3. Step 3: Cross multiply
    12,277.47x = 18,312.92 × 11,908.51
  4. Step 4: Simplify right side
    12,277.47x = 218,079,666.78
  5. Step 5: Solve for x
    x = 218,079,666.78/12,277.47
  6. Step 6: Final answer
    x = 17,762.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.