Home / 20,337.93-28,066.41-11,385.81

Finding the Fourth Proportional to 20,337.93, 28,066.41 and 11,385.81

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Solution

The fourth proportional to 20,337.93, 28,066.41 and 11,385.81 is: 15,712.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,337.93 : 28,066.41 = 11,385.81 : x
  2. Step 2: Convert to fraction form
    20,337.93/28,066.41 = 11,385.81/x
  3. Step 3: Cross multiply
    20,337.93x = 28,066.41 × 11,385.81
  4. Step 4: Simplify right side
    20,337.93x = 319,558,811.64
  5. Step 5: Solve for x
    x = 319,558,811.64/20,337.93
  6. Step 6: Final answer
    x = 15,712.46

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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.