Home / 30,887.80-42,625.14-16,740.64

Finding the Fourth Proportional to 30,887.80, 42,625.14 and 16,740.64

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Solution

The fourth proportional to 30,887.80, 42,625.14 and 16,740.64 is: 23,102.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,887.80 : 42,625.14 = 16,740.64 : x
  2. Step 2: Convert to fraction form
    30,887.80/42,625.14 = 16,740.64/x
  3. Step 3: Cross multiply
    30,887.80x = 42,625.14 × 16,740.64
  4. Step 4: Simplify right side
    30,887.80x = 713,572,123.69
  5. Step 5: Solve for x
    x = 713,572,123.69/30,887.80
  6. Step 6: Final answer
    x = 23,102.07

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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.