Home / 13,128.29-19,666.21-8,957.96

Finding the Fourth Proportional to 13,128.29, 19,666.21 and 8,957.96

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Solution

The fourth proportional to 13,128.29, 19,666.21 and 8,957.96 is: 13,419.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,128.29 : 19,666.21 = 8,957.96 : x
  2. Step 2: Convert to fraction form
    13,128.29/19,666.21 = 8,957.96/x
  3. Step 3: Cross multiply
    13,128.29x = 19,666.21 × 8,957.96
  4. Step 4: Simplify right side
    13,128.29x = 176,169,001.81
  5. Step 5: Solve for x
    x = 176,169,001.81/13,128.29
  6. Step 6: Final answer
    x = 13,419.03

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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.