Home / 13,077.50-18,029.03-8,989.16

Finding the Fourth Proportional to 13,077.50, 18,029.03 and 8,989.16

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Solution

The fourth proportional to 13,077.50, 18,029.03 and 8,989.16 is: 12,392.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,077.50 : 18,029.03 = 8,989.16 : x
  2. Step 2: Convert to fraction form
    13,077.50/18,029.03 = 8,989.16/x
  3. Step 3: Cross multiply
    13,077.50x = 18,029.03 × 8,989.16
  4. Step 4: Simplify right side
    13,077.50x = 162,065,700.22
  5. Step 5: Solve for x
    x = 162,065,700.22/13,077.50
  6. Step 6: Final answer
    x = 12,392.72

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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.