Home / 18,271.20-27,417.60-13,328.40

Finding the Fourth Proportional to 18,271.20, 27,417.60 and 13,328.40

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Solution

The fourth proportional to 18,271.20, 27,417.60 and 13,328.40 is: 20,000.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,271.20 : 27,417.60 = 13,328.40 : x
  2. Step 2: Convert to fraction form
    18,271.20/27,417.60 = 13,328.40/x
  3. Step 3: Cross multiply
    18,271.20x = 27,417.60 × 13,328.40
  4. Step 4: Simplify right side
    18,271.20x = 365,432,739.84
  5. Step 5: Solve for x
    x = 365,432,739.84/18,271.20
  6. Step 6: Final answer
    x = 20,000.48

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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.