Home / 20,332.56-28,066.68-13,260.72

Finding the Fourth Proportional to 20,332.56, 28,066.68 and 13,260.72

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Solution

The fourth proportional to 20,332.56, 28,066.68 and 13,260.72 is: 18,304.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,332.56 : 28,066.68 = 13,260.72 : x
  2. Step 2: Convert to fraction form
    20,332.56/28,066.68 = 13,260.72/x
  3. Step 3: Cross multiply
    20,332.56x = 28,066.68 × 13,260.72
  4. Step 4: Simplify right side
    20,332.56x = 372,184,384.81
  5. Step 5: Solve for x
    x = 372,184,384.81/20,332.56
  6. Step 6: Final answer
    x = 18,304.85

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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.