Home / 21,890.88-30,210.72-16,577.28

Finding the Fourth Proportional to 21,890.88, 30,210.72 and 16,577.28

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Solution

The fourth proportional to 21,890.88, 30,210.72 and 16,577.28 is: 22,877.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,890.88 : 30,210.72 = 16,577.28 : x
  2. Step 2: Convert to fraction form
    21,890.88/30,210.72 = 16,577.28/x
  3. Step 3: Cross multiply
    21,890.88x = 30,210.72 × 16,577.28
  4. Step 4: Simplify right side
    21,890.88x = 500,811,564.44
  5. Step 5: Solve for x
    x = 500,811,564.44/21,890.88
  6. Step 6: Final answer
    x = 22,877.64

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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.