Home / 20,762.98-31,148.57-7,615.47

Finding the Fourth Proportional to 20,762.98, 31,148.57 and 7,615.47

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Solution

The fourth proportional to 20,762.98, 31,148.57 and 7,615.47 is: 11,424.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,762.98 : 31,148.57 = 7,615.47 : x
  2. Step 2: Convert to fraction form
    20,762.98/31,148.57 = 7,615.47/x
  3. Step 3: Cross multiply
    20,762.98x = 31,148.57 × 7,615.47
  4. Step 4: Simplify right side
    20,762.98x = 237,211,000.38
  5. Step 5: Solve for x
    x = 237,211,000.38/20,762.98
  6. Step 6: Final answer
    x = 11,424.71

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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.