Home / 28,219.65-42,338.30-16,987.29

Finding the Fourth Proportional to 28,219.65, 42,338.30 and 16,987.29

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Solution

The fourth proportional to 28,219.65, 42,338.30 and 16,987.29 is: 25,486.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,219.65 : 42,338.30 = 16,987.29 : x
  2. Step 2: Convert to fraction form
    28,219.65/42,338.30 = 16,987.29/x
  3. Step 3: Cross multiply
    28,219.65x = 42,338.30 × 16,987.29
  4. Step 4: Simplify right side
    28,219.65x = 719,212,895.27
  5. Step 5: Solve for x
    x = 719,212,895.27/28,219.65
  6. Step 6: Final answer
    x = 25,486.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.