Home / 13,749.08-18,989.20-9,291.24

Finding the Fourth Proportional to 13,749.08, 18,989.20 and 9,291.24

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Solution

The fourth proportional to 13,749.08, 18,989.20 and 9,291.24 is: 12,832.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,749.08 : 18,989.20 = 9,291.24 : x
  2. Step 2: Convert to fraction form
    13,749.08/18,989.20 = 9,291.24/x
  3. Step 3: Cross multiply
    13,749.08x = 18,989.20 × 9,291.24
  4. Step 4: Simplify right side
    13,749.08x = 176,433,214.61
  5. Step 5: Solve for x
    x = 176,433,214.61/13,749.08
  6. Step 6: Final answer
    x = 12,832.37

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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.