Home / 30,887.91-42,625.35-16,740.78

Finding the Fourth Proportional to 30,887.91, 42,625.35 and 16,740.78

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Solution

The fourth proportional to 30,887.91, 42,625.35 and 16,740.78 is: 23,102.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,887.91 : 42,625.35 = 16,740.78 : x
  2. Step 2: Convert to fraction form
    30,887.91/42,625.35 = 16,740.78/x
  3. Step 3: Cross multiply
    30,887.91x = 42,625.35 × 16,740.78
  4. Step 4: Simplify right side
    30,887.91x = 713,581,606.77
  5. Step 5: Solve for x
    x = 713,581,606.77/30,887.91
  6. Step 6: Final answer
    x = 23,102.29

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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.