Home / 20,762.09-31,143.10-7,615.52

Finding the Fourth Proportional to 20,762.09, 31,143.10 and 7,615.52

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Solution

The fourth proportional to 20,762.09, 31,143.10 and 7,615.52 is: 11,423.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,762.09 : 31,143.10 = 7,615.52 : x
  2. Step 2: Convert to fraction form
    20,762.09/31,143.10 = 7,615.52/x
  3. Step 3: Cross multiply
    20,762.09x = 31,143.10 × 7,615.52
  4. Step 4: Simplify right side
    20,762.09x = 237,170,900.91
  5. Step 5: Solve for x
    x = 237,170,900.91/20,762.09
  6. Step 6: Final answer
    x = 11,423.27

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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.