Home / 13,821.32-20,715.75-6,410.18

Finding the Fourth Proportional to 13,821.32, 20,715.75 and 6,410.18

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Solution

The fourth proportional to 13,821.32, 20,715.75 and 6,410.18 is: 9,607.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,821.32 : 20,715.75 = 6,410.18 : x
  2. Step 2: Convert to fraction form
    13,821.32/20,715.75 = 6,410.18/x
  3. Step 3: Cross multiply
    13,821.32x = 20,715.75 × 6,410.18
  4. Step 4: Simplify right side
    13,821.32x = 132,791,582.76
  5. Step 5: Solve for x
    x = 132,791,582.76/13,821.32
  6. Step 6: Final answer
    x = 9,607.74

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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.