Home / 21,904.13-30,233.16-12,478.16

Finding the Fourth Proportional to 21,904.13, 30,233.16 and 12,478.16

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Solution

The fourth proportional to 21,904.13, 30,233.16 and 12,478.16 is: 17,222.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,904.13 : 30,233.16 = 12,478.16 : x
  2. Step 2: Convert to fraction form
    21,904.13/30,233.16 = 12,478.16/x
  3. Step 3: Cross multiply
    21,904.13x = 30,233.16 × 12,478.16
  4. Step 4: Simplify right side
    21,904.13x = 377,254,056.62
  5. Step 5: Solve for x
    x = 377,254,056.62/21,904.13
  6. Step 6: Final answer
    x = 17,222.97

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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.