Home / 31,107.90-46,661.85-18,666.30

Finding the Fourth Proportional to 31,107.90, 46,661.85 and 18,666.30

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Solution

The fourth proportional to 31,107.90, 46,661.85 and 18,666.30 is: 27,999.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,107.90 : 46,661.85 = 18,666.30 : x
  2. Step 2: Convert to fraction form
    31,107.90/46,661.85 = 18,666.30/x
  3. Step 3: Cross multiply
    31,107.90x = 46,661.85 × 18,666.30
  4. Step 4: Simplify right side
    31,107.90x = 871,004,090.66
  5. Step 5: Solve for x
    x = 871,004,090.66/31,107.90
  6. Step 6: Final answer
    x = 27,999.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.