Home / 20,424.60-30,603.33-12,617.28

Finding the Fourth Proportional to 20,424.60, 30,603.33 and 12,617.28

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Solution

The fourth proportional to 20,424.60, 30,603.33 and 12,617.28 is: 18,905.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,424.60 : 30,603.33 = 12,617.28 : x
  2. Step 2: Convert to fraction form
    20,424.60/30,603.33 = 12,617.28/x
  3. Step 3: Cross multiply
    20,424.60x = 30,603.33 × 12,617.28
  4. Step 4: Simplify right side
    20,424.60x = 386,130,783.54
  5. Step 5: Solve for x
    x = 386,130,783.54/20,424.60
  6. Step 6: Final answer
    x = 18,905.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.