Home / 31,762.80-47,666.10-10,986.30

Finding the Fourth Proportional to 31,762.80, 47,666.10 and 10,986.30

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Solution

The fourth proportional to 31,762.80, 47,666.10 and 10,986.30 is: 16,487.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,762.80 : 47,666.10 = 10,986.30 : x
  2. Step 2: Convert to fraction form
    31,762.80/47,666.10 = 10,986.30/x
  3. Step 3: Cross multiply
    31,762.80x = 47,666.10 × 10,986.30
  4. Step 4: Simplify right side
    31,762.80x = 523,674,074.43
  5. Step 5: Solve for x
    x = 523,674,074.43/31,762.80
  6. Step 6: Final answer
    x = 16,487.02

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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.