Home / 21,857.40-30,136.32-16,184.16

Finding the Fourth Proportional to 21,857.40, 30,136.32 and 16,184.16

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Solution

The fourth proportional to 21,857.40, 30,136.32 and 16,184.16 is: 22,314.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,857.40 : 30,136.32 = 16,184.16 : x
  2. Step 2: Convert to fraction form
    21,857.40/30,136.32 = 16,184.16/x
  3. Step 3: Cross multiply
    21,857.40x = 30,136.32 × 16,184.16
  4. Step 4: Simplify right side
    21,857.40x = 487,731,024.69
  5. Step 5: Solve for x
    x = 487,731,024.69/21,857.40
  6. Step 6: Final answer
    x = 22,314.23

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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.