Home / 21,619.90-32,273.51-18,995.50

Finding the Fourth Proportional to 21,619.90, 32,273.51 and 18,995.50

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Solution

The fourth proportional to 21,619.90, 32,273.51 and 18,995.50 is: 28,355.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,619.90 : 32,273.51 = 18,995.50 : x
  2. Step 2: Convert to fraction form
    21,619.90/32,273.51 = 18,995.50/x
  3. Step 3: Cross multiply
    21,619.90x = 32,273.51 × 18,995.50
  4. Step 4: Simplify right side
    21,619.90x = 613,051,459.21
  5. Step 5: Solve for x
    x = 613,051,459.21/21,619.90
  6. Step 6: Final answer
    x = 28,355.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.