Home / 28,236.91-42,298.89-16,986.05

Finding the Fourth Proportional to 28,236.91, 42,298.89 and 16,986.05

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Solution

The fourth proportional to 28,236.91, 42,298.89 and 16,986.05 is: 25,445.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,236.91 : 42,298.89 = 16,986.05 : x
  2. Step 2: Convert to fraction form
    28,236.91/42,298.89 = 16,986.05/x
  3. Step 3: Cross multiply
    28,236.91x = 42,298.89 × 16,986.05
  4. Step 4: Simplify right side
    28,236.91x = 718,490,954.74
  5. Step 5: Solve for x
    x = 718,490,954.74/28,236.91
  6. Step 6: Final answer
    x = 25,445.10

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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.