Home / 39,815.28-54,826.58-38,931.30

Finding the Fourth Proportional to 39,815.28, 54,826.58 and 38,931.30

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Solution

The fourth proportional to 39,815.28, 54,826.58 and 38,931.30 is: 53,609.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,815.28 : 54,826.58 = 38,931.30 : x
  2. Step 2: Convert to fraction form
    39,815.28/54,826.58 = 38,931.30/x
  3. Step 3: Cross multiply
    39,815.28x = 54,826.58 × 38,931.30
  4. Step 4: Simplify right side
    39,815.28x = 2,134,470,033.95
  5. Step 5: Solve for x
    x = 2,134,470,033.95/39,815.28
  6. Step 6: Final answer
    x = 53,609.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.