Home / 13,389.15-20,061.83-8,108.16

Finding the Fourth Proportional to 13,389.15, 20,061.83 and 8,108.16

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Solution

The fourth proportional to 13,389.15, 20,061.83 and 8,108.16 is: 12,148.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,389.15 : 20,061.83 = 8,108.16 : x
  2. Step 2: Convert to fraction form
    13,389.15/20,061.83 = 8,108.16/x
  3. Step 3: Cross multiply
    13,389.15x = 20,061.83 × 8,108.16
  4. Step 4: Simplify right side
    13,389.15x = 162,664,486.99
  5. Step 5: Solve for x
    x = 162,664,486.99/13,389.15
  6. Step 6: Final answer
    x = 12,148.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.