Home / 13,563.23-18,720.62-8,187.30

Finding the Fourth Proportional to 13,563.23, 18,720.62 and 8,187.30

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Solution

The fourth proportional to 13,563.23, 18,720.62 and 8,187.30 is: 11,300.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,563.23 : 18,720.62 = 8,187.30 : x
  2. Step 2: Convert to fraction form
    13,563.23/18,720.62 = 8,187.30/x
  3. Step 3: Cross multiply
    13,563.23x = 18,720.62 × 8,187.30
  4. Step 4: Simplify right side
    13,563.23x = 153,271,291.19
  5. Step 5: Solve for x
    x = 153,271,291.19/13,563.23
  6. Step 6: Final answer
    x = 11,300.50

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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.