Home / 21,775.90-30,039.32-16,461.50

Finding the Fourth Proportional to 21,775.90, 30,039.32 and 16,461.50

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Solution

The fourth proportional to 21,775.90, 30,039.32 and 16,461.50 is: 22,708.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,775.90 : 30,039.32 = 16,461.50 : x
  2. Step 2: Convert to fraction form
    21,775.90/30,039.32 = 16,461.50/x
  3. Step 3: Cross multiply
    21,775.90x = 30,039.32 × 16,461.50
  4. Step 4: Simplify right side
    21,775.90x = 494,492,266.18
  5. Step 5: Solve for x
    x = 494,492,266.18/21,775.90
  6. Step 6: Final answer
    x = 22,708.24

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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.