Home / 20,581.16-28,402.55-11,628.46

Finding the Fourth Proportional to 20,581.16, 28,402.55 and 11,628.46

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Solution

The fourth proportional to 20,581.16, 28,402.55 and 11,628.46 is: 16,047.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,581.16 : 28,402.55 = 11,628.46 : x
  2. Step 2: Convert to fraction form
    20,581.16/28,402.55 = 11,628.46/x
  3. Step 3: Cross multiply
    20,581.16x = 28,402.55 × 11,628.46
  4. Step 4: Simplify right side
    20,581.16x = 330,277,937.54
  5. Step 5: Solve for x
    x = 330,277,937.54/20,581.16
  6. Step 6: Final answer
    x = 16,047.59

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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.