Home / 21,808.45-30,029.02-16,438.69

Finding the Fourth Proportional to 21,808.45, 30,029.02 and 16,438.69

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Solution

The fourth proportional to 21,808.45, 30,029.02 and 16,438.69 is: 22,635.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,808.45 : 30,029.02 = 16,438.69 : x
  2. Step 2: Convert to fraction form
    21,808.45/30,029.02 = 16,438.69/x
  3. Step 3: Cross multiply
    21,808.45x = 30,029.02 × 16,438.69
  4. Step 4: Simplify right side
    21,808.45x = 493,637,750.78
  5. Step 5: Solve for x
    x = 493,637,750.78/21,808.45
  6. Step 6: Final answer
    x = 22,635.16

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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.