Home / 20,461.99-28,237.70-11,509.42

Finding the Fourth Proportional to 20,461.99, 28,237.70 and 11,509.42

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Solution

The fourth proportional to 20,461.99, 28,237.70 and 11,509.42 is: 15,883.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,461.99 : 28,237.70 = 11,509.42 : x
  2. Step 2: Convert to fraction form
    20,461.99/28,237.70 = 11,509.42/x
  3. Step 3: Cross multiply
    20,461.99x = 28,237.70 × 11,509.42
  4. Step 4: Simplify right side
    20,461.99x = 324,999,350.40
  5. Step 5: Solve for x
    x = 324,999,350.40/20,461.99
  6. Step 6: Final answer
    x = 15,883.08

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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.