Home / 21,823.34-30,117.78-12,392.51

Finding the Fourth Proportional to 21,823.34, 30,117.78 and 12,392.51

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Solution

The fourth proportional to 21,823.34, 30,117.78 and 12,392.51 is: 17,102.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,823.34 : 30,117.78 = 12,392.51 : x
  2. Step 2: Convert to fraction form
    21,823.34/30,117.78 = 12,392.51/x
  3. Step 3: Cross multiply
    21,823.34x = 30,117.78 × 12,392.51
  4. Step 4: Simplify right side
    21,823.34x = 373,234,739.24
  5. Step 5: Solve for x
    x = 373,234,739.24/21,823.34
  6. Step 6: Final answer
    x = 17,102.55

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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.