Home / 15,318.88-21,136.16-9,350.16

Finding the Fourth Proportional to 15,318.88, 21,136.16 and 9,350.16

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Solution

The fourth proportional to 15,318.88, 21,136.16 and 9,350.16 is: 12,900.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,318.88 : 21,136.16 = 9,350.16 : x
  2. Step 2: Convert to fraction form
    15,318.88/21,136.16 = 9,350.16/x
  3. Step 3: Cross multiply
    15,318.88x = 21,136.16 × 9,350.16
  4. Step 4: Simplify right side
    15,318.88x = 197,626,477.79
  5. Step 5: Solve for x
    x = 197,626,477.79/15,318.88
  6. Step 6: Final answer
    x = 12,900.84

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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.