Home / 21,921.47-30,254.60-12,363.32

Finding the Fourth Proportional to 21,921.47, 30,254.60 and 12,363.32

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Solution

The fourth proportional to 21,921.47, 30,254.60 and 12,363.32 is: 17,063.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,921.47 : 30,254.60 = 12,363.32 : x
  2. Step 2: Convert to fraction form
    21,921.47/30,254.60 = 12,363.32/x
  3. Step 3: Cross multiply
    21,921.47x = 30,254.60 × 12,363.32
  4. Step 4: Simplify right side
    21,921.47x = 374,047,315.09
  5. Step 5: Solve for x
    x = 374,047,315.09/21,921.47
  6. Step 6: Final answer
    x = 17,063.06

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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.