Home / 14,421.72-19,886.61-11,391.51

Finding the Fourth Proportional to 14,421.72, 19,886.61 and 11,391.51

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Solution

The fourth proportional to 14,421.72, 19,886.61 and 11,391.51 is: 15,708.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,421.72 : 19,886.61 = 11,391.51 : x
  2. Step 2: Convert to fraction form
    14,421.72/19,886.61 = 11,391.51/x
  3. Step 3: Cross multiply
    14,421.72x = 19,886.61 × 11,391.51
  4. Step 4: Simplify right side
    14,421.72x = 226,538,516.68
  5. Step 5: Solve for x
    x = 226,538,516.68/14,421.72
  6. Step 6: Final answer
    x = 15,708.15

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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.