Home / 13,661.86-20,492.70-7,814.32

Finding the Fourth Proportional to 13,661.86, 20,492.70 and 7,814.32

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Solution

The fourth proportional to 13,661.86, 20,492.70 and 7,814.32 is: 11,721.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,661.86 : 20,492.70 = 7,814.32 : x
  2. Step 2: Convert to fraction form
    13,661.86/20,492.70 = 7,814.32/x
  3. Step 3: Cross multiply
    13,661.86x = 20,492.70 × 7,814.32
  4. Step 4: Simplify right side
    13,661.86x = 160,136,515.46
  5. Step 5: Solve for x
    x = 160,136,515.46/13,661.86
  6. Step 6: Final answer
    x = 11,721.43

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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.