Home / 20,675.25-30,988.17-7,520.45

Finding the Fourth Proportional to 20,675.25, 30,988.17 and 7,520.45

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Solution

The fourth proportional to 20,675.25, 30,988.17 and 7,520.45 is: 11,271.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,675.25 : 30,988.17 = 7,520.45 : x
  2. Step 2: Convert to fraction form
    20,675.25/30,988.17 = 7,520.45/x
  3. Step 3: Cross multiply
    20,675.25x = 30,988.17 × 7,520.45
  4. Step 4: Simplify right side
    20,675.25x = 233,044,828.14
  5. Step 5: Solve for x
    x = 233,044,828.14/20,675.25
  6. Step 6: Final answer
    x = 11,271.68

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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.