Home / 26,878.76-40,315.98-16,989.20

Finding the Fourth Proportional to 26,878.76, 40,315.98 and 16,989.20

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Solution

The fourth proportional to 26,878.76, 40,315.98 and 16,989.20 is: 25,482.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,878.76 : 40,315.98 = 16,989.20 : x
  2. Step 2: Convert to fraction form
    26,878.76/40,315.98 = 16,989.20/x
  3. Step 3: Cross multiply
    26,878.76x = 40,315.98 × 16,989.20
  4. Step 4: Simplify right side
    26,878.76x = 684,936,247.42
  5. Step 5: Solve for x
    x = 684,936,247.42/26,878.76
  6. Step 6: Final answer
    x = 25,482.43

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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.