Home / 20,465.73-28,242.45-11,513.30

Finding the Fourth Proportional to 20,465.73, 28,242.45 and 11,513.30

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Solution

The fourth proportional to 20,465.73, 28,242.45 and 11,513.30 is: 15,888.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,465.73 : 28,242.45 = 11,513.30 : x
  2. Step 2: Convert to fraction form
    20,465.73/28,242.45 = 11,513.30/x
  3. Step 3: Cross multiply
    20,465.73x = 28,242.45 × 11,513.30
  4. Step 4: Simplify right side
    20,465.73x = 325,163,658.37
  5. Step 5: Solve for x
    x = 325,163,658.37/20,465.73
  6. Step 6: Final answer
    x = 15,888.20

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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.