Home / 20,350.40-28,086.96-12,395.72

Finding the Fourth Proportional to 20,350.40, 28,086.96 and 12,395.72

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Solution

The fourth proportional to 20,350.40, 28,086.96 and 12,395.72 is: 17,108.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,350.40 : 28,086.96 = 12,395.72 : x
  2. Step 2: Convert to fraction form
    20,350.40/28,086.96 = 12,395.72/x
  3. Step 3: Cross multiply
    20,350.40x = 28,086.96 × 12,395.72
  4. Step 4: Simplify right side
    20,350.40x = 348,158,091.81
  5. Step 5: Solve for x
    x = 348,158,091.81/20,350.40
  6. Step 6: Final answer
    x = 17,108.17

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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.