Home / 30,828.92-42,543.66-16,681.48

Finding the Fourth Proportional to 30,828.92, 42,543.66 and 16,681.48

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Solution

The fourth proportional to 30,828.92, 42,543.66 and 16,681.48 is: 23,020.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,828.92 : 42,543.66 = 16,681.48 : x
  2. Step 2: Convert to fraction form
    30,828.92/42,543.66 = 16,681.48/x
  3. Step 3: Cross multiply
    30,828.92x = 42,543.66 × 16,681.48
  4. Step 4: Simplify right side
    30,828.92x = 709,691,213.42
  5. Step 5: Solve for x
    x = 709,691,213.42/30,828.92
  6. Step 6: Final answer
    x = 23,020.31

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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.