Home / 30,428.52-41,988.96-16,998.72

Finding the Fourth Proportional to 30,428.52, 41,988.96 and 16,998.72

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Solution

The fourth proportional to 30,428.52, 41,988.96 and 16,998.72 is: 23,456.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,428.52 : 41,988.96 = 16,998.72 : x
  2. Step 2: Convert to fraction form
    30,428.52/41,988.96 = 16,998.72/x
  3. Step 3: Cross multiply
    30,428.52x = 41,988.96 × 16,998.72
  4. Step 4: Simplify right side
    30,428.52x = 713,758,574.13
  5. Step 5: Solve for x
    x = 713,758,574.13/30,428.52
  6. Step 6: Final answer
    x = 23,456.89

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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.