Home / 17,385.12-23,985.18-11,420.01

Finding the Fourth Proportional to 17,385.12, 23,985.18 and 11,420.01

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Solution

The fourth proportional to 17,385.12, 23,985.18 and 11,420.01 is: 15,755.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,385.12 : 23,985.18 = 11,420.01 : x
  2. Step 2: Convert to fraction form
    17,385.12/23,985.18 = 11,420.01/x
  3. Step 3: Cross multiply
    17,385.12x = 23,985.18 × 11,420.01
  4. Step 4: Simplify right side
    17,385.12x = 273,910,995.45
  5. Step 5: Solve for x
    x = 273,910,995.45/17,385.12
  6. Step 6: Final answer
    x = 15,755.48

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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.