Home / 20,709.11-31,064.68-5,920.19

Finding the Fourth Proportional to 20,709.11, 31,064.68 and 5,920.19

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Solution

The fourth proportional to 20,709.11, 31,064.68 and 5,920.19 is: 8,880.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,709.11 : 31,064.68 = 5,920.19 : x
  2. Step 2: Convert to fraction form
    20,709.11/31,064.68 = 5,920.19/x
  3. Step 3: Cross multiply
    20,709.11x = 31,064.68 × 5,920.19
  4. Step 4: Simplify right side
    20,709.11x = 183,908,637.77
  5. Step 5: Solve for x
    x = 183,908,637.77/20,709.11
  6. Step 6: Final answer
    x = 8,880.57

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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.