Home / 13,189.80-18,206.16-8,717.52

Finding the Fourth Proportional to 13,189.80, 18,206.16 and 8,717.52

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Solution

The fourth proportional to 13,189.80, 18,206.16 and 8,717.52 is: 12,032.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,189.80 : 18,206.16 = 8,717.52 : x
  2. Step 2: Convert to fraction form
    13,189.80/18,206.16 = 8,717.52/x
  3. Step 3: Cross multiply
    13,189.80x = 18,206.16 × 8,717.52
  4. Step 4: Simplify right side
    13,189.80x = 158,712,563.92
  5. Step 5: Solve for x
    x = 158,712,563.92/13,189.80
  6. Step 6: Final answer
    x = 12,032.98

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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.