Home / 13,639.59-20,444.69-6,604.71

Finding the Fourth Proportional to 13,639.59, 20,444.69 and 6,604.71

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Solution

The fourth proportional to 13,639.59, 20,444.69 and 6,604.71 is: 9,899.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,639.59 : 20,444.69 = 6,604.71 : x
  2. Step 2: Convert to fraction form
    13,639.59/20,444.69 = 6,604.71/x
  3. Step 3: Cross multiply
    13,639.59x = 20,444.69 × 6,604.71
  4. Step 4: Simplify right side
    13,639.59x = 135,031,215.47
  5. Step 5: Solve for x
    x = 135,031,215.47/13,639.59
  6. Step 6: Final answer
    x = 9,899.95

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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.