Home / 31,147.04-42,982.32-16,999.84

Finding the Fourth Proportional to 31,147.04, 42,982.32 and 16,999.84

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Solution

The fourth proportional to 31,147.04, 42,982.32 and 16,999.84 is: 23,459.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,147.04 : 42,982.32 = 16,999.84 : x
  2. Step 2: Convert to fraction form
    31,147.04/42,982.32 = 16,999.84/x
  3. Step 3: Cross multiply
    31,147.04x = 42,982.32 × 16,999.84
  4. Step 4: Simplify right side
    31,147.04x = 730,692,562.83
  5. Step 5: Solve for x
    x = 730,692,562.83/31,147.04
  6. Step 6: Final answer
    x = 23,459.45

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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.