Home / 18,835.77-28,256.40-5,689.20

Finding the Fourth Proportional to 18,835.77, 28,256.40 and 5,689.20

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Solution

The fourth proportional to 18,835.77, 28,256.40 and 5,689.20 is: 8,534.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,835.77 : 28,256.40 = 5,689.20 : x
  2. Step 2: Convert to fraction form
    18,835.77/28,256.40 = 5,689.20/x
  3. Step 3: Cross multiply
    18,835.77x = 28,256.40 × 5,689.20
  4. Step 4: Simplify right side
    18,835.77x = 160,756,310.88
  5. Step 5: Solve for x
    x = 160,756,310.88/18,835.77
  6. Step 6: Final answer
    x = 8,534.63

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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.