Home / 30,828.45-42,543.25-16,681.29

Finding the Fourth Proportional to 30,828.45, 42,543.25 and 16,681.29

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Solution

The fourth proportional to 30,828.45, 42,543.25 and 16,681.29 is: 23,020.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,828.45 : 42,543.25 = 16,681.29 : x
  2. Step 2: Convert to fraction form
    30,828.45/42,543.25 = 16,681.29/x
  3. Step 3: Cross multiply
    30,828.45x = 42,543.25 × 16,681.29
  4. Step 4: Simplify right side
    30,828.45x = 709,676,290.79
  5. Step 5: Solve for x
    x = 709,676,290.79/30,828.45
  6. Step 6: Final answer
    x = 23,020.17

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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.