Home / 30,887.95-42,625.43-16,740.79

Finding the Fourth Proportional to 30,887.95, 42,625.43 and 16,740.79

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Solution

The fourth proportional to 30,887.95, 42,625.43 and 16,740.79 is: 23,102.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,887.95 : 42,625.43 = 16,740.79 : x
  2. Step 2: Convert to fraction form
    30,887.95/42,625.43 = 16,740.79/x
  3. Step 3: Cross multiply
    30,887.95x = 42,625.43 × 16,740.79
  4. Step 4: Simplify right side
    30,887.95x = 713,583,372.29
  5. Step 5: Solve for x
    x = 713,583,372.29/30,887.95
  6. Step 6: Final answer
    x = 23,102.32

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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.