Home / 20,690.10-31,035.15-10,832.40

Finding the Fourth Proportional to 20,690.10, 31,035.15 and 10,832.40

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Solution

The fourth proportional to 20,690.10, 31,035.15 and 10,832.40 is: 16,248.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,690.10 : 31,035.15 = 10,832.40 : x
  2. Step 2: Convert to fraction form
    20,690.10/31,035.15 = 10,832.40/x
  3. Step 3: Cross multiply
    20,690.10x = 31,035.15 × 10,832.40
  4. Step 4: Simplify right side
    20,690.10x = 336,185,158.86
  5. Step 5: Solve for x
    x = 336,185,158.86/20,690.10
  6. Step 6: Final answer
    x = 16,248.60

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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.