Home / 20,342.16-30,396.62-15,506.86

Finding the Fourth Proportional to 20,342.16, 30,396.62 and 15,506.86

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Solution

The fourth proportional to 20,342.16, 30,396.62 and 15,506.86 is: 23,171.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,342.16 : 30,396.62 = 15,506.86 : x
  2. Step 2: Convert to fraction form
    20,342.16/30,396.62 = 15,506.86/x
  3. Step 3: Cross multiply
    20,342.16x = 30,396.62 × 15,506.86
  4. Step 4: Simplify right side
    20,342.16x = 471,356,130.81
  5. Step 5: Solve for x
    x = 471,356,130.81/20,342.16
  6. Step 6: Final answer
    x = 23,171.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.