Home / 21,744.90-30,000.76-15,028.10

Finding the Fourth Proportional to 21,744.90, 30,000.76 and 15,028.10

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Solution

The fourth proportional to 21,744.90, 30,000.76 and 15,028.10 is: 20,733.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,744.90 : 30,000.76 = 15,028.10 : x
  2. Step 2: Convert to fraction form
    21,744.90/30,000.76 = 15,028.10/x
  3. Step 3: Cross multiply
    21,744.90x = 30,000.76 × 15,028.10
  4. Step 4: Simplify right side
    21,744.90x = 450,854,421.36
  5. Step 5: Solve for x
    x = 450,854,421.36/21,744.90
  6. Step 6: Final answer
    x = 20,733.80

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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.