Home / 16,822.40-25,233.60-12,459.20

Finding the Fourth Proportional to 16,822.40, 25,233.60 and 12,459.20

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Solution

The fourth proportional to 16,822.40, 25,233.60 and 12,459.20 is: 18,688.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,822.40 : 25,233.60 = 12,459.20 : x
  2. Step 2: Convert to fraction form
    16,822.40/25,233.60 = 12,459.20/x
  3. Step 3: Cross multiply
    16,822.40x = 25,233.60 × 12,459.20
  4. Step 4: Simplify right side
    16,822.40x = 314,390,469.12
  5. Step 5: Solve for x
    x = 314,390,469.12/16,822.40
  6. Step 6: Final answer
    x = 18,688.80

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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.