Home / 21,923.78-30,254.77-12,492.34

Finding the Fourth Proportional to 21,923.78, 30,254.77 and 12,492.34

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Solution

The fourth proportional to 21,923.78, 30,254.77 and 12,492.34 is: 17,239.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,923.78 : 30,254.77 = 12,492.34 : x
  2. Step 2: Convert to fraction form
    21,923.78/30,254.77 = 12,492.34/x
  3. Step 3: Cross multiply
    21,923.78x = 30,254.77 × 12,492.34
  4. Step 4: Simplify right side
    21,923.78x = 377,952,873.46
  5. Step 5: Solve for x
    x = 377,952,873.46/21,923.78
  6. Step 6: Final answer
    x = 17,239.40

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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.