Home / 20,689.55-31,035.35-5,900.66

Finding the Fourth Proportional to 20,689.55, 31,035.35 and 5,900.66

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Solution

The fourth proportional to 20,689.55, 31,035.35 and 5,900.66 is: 8,851.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,689.55 : 31,035.35 = 5,900.66 : x
  2. Step 2: Convert to fraction form
    20,689.55/31,035.35 = 5,900.66/x
  3. Step 3: Cross multiply
    20,689.55x = 31,035.35 × 5,900.66
  4. Step 4: Simplify right side
    20,689.55x = 183,128,907.91
  5. Step 5: Solve for x
    x = 183,128,907.91/20,689.55
  6. Step 6: Final answer
    x = 8,851.28

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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.