Home / 13,581.02-18,739.32-8,277.50

Finding the Fourth Proportional to 13,581.02, 18,739.32 and 8,277.50

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Solution

The fourth proportional to 13,581.02, 18,739.32 and 8,277.50 is: 11,421.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,581.02 : 18,739.32 = 8,277.50 : x
  2. Step 2: Convert to fraction form
    13,581.02/18,739.32 = 8,277.50/x
  3. Step 3: Cross multiply
    13,581.02x = 18,739.32 × 8,277.50
  4. Step 4: Simplify right side
    13,581.02x = 155,114,721.30
  5. Step 5: Solve for x
    x = 155,114,721.30/13,581.02
  6. Step 6: Final answer
    x = 11,421.43

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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.