Home / 30,887.55-42,623.67-16,740.09

Finding the Fourth Proportional to 30,887.55, 42,623.67 and 16,740.09

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Solution

The fourth proportional to 30,887.55, 42,623.67 and 16,740.09 is: 23,100.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,887.55 : 42,623.67 = 16,740.09 : x
  2. Step 2: Convert to fraction form
    30,887.55/42,623.67 = 16,740.09/x
  3. Step 3: Cross multiply
    30,887.55x = 42,623.67 × 16,740.09
  4. Step 4: Simplify right side
    30,887.55x = 713,524,071.93
  5. Step 5: Solve for x
    x = 713,524,071.93/30,887.55
  6. Step 6: Final answer
    x = 23,100.70

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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.