Home / 31,527.90-43,500.24-18,780.12

Finding the Fourth Proportional to 31,527.90, 43,500.24 and 18,780.12

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Solution

The fourth proportional to 31,527.90, 43,500.24 and 18,780.12 is: 25,911.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,527.90 : 43,500.24 = 18,780.12 : x
  2. Step 2: Convert to fraction form
    31,527.90/43,500.24 = 18,780.12/x
  3. Step 3: Cross multiply
    31,527.90x = 43,500.24 × 18,780.12
  4. Step 4: Simplify right side
    31,527.90x = 816,939,727.23
  5. Step 5: Solve for x
    x = 816,939,727.23/31,527.90
  6. Step 6: Final answer
    x = 25,911.64

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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.