Home / 9,428.58-13,011.30-5,179.80

Finding the Fourth Proportional to 9,428.58, 13,011.30 and 5,179.80

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Solution

The fourth proportional to 9,428.58, 13,011.30 and 5,179.80 is: 7,148.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,428.58 : 13,011.30 = 5,179.80 : x
  2. Step 2: Convert to fraction form
    9,428.58/13,011.30 = 5,179.80/x
  3. Step 3: Cross multiply
    9,428.58x = 13,011.30 × 5,179.80
  4. Step 4: Simplify right side
    9,428.58x = 67,395,931.74
  5. Step 5: Solve for x
    x = 67,395,931.74/9,428.58
  6. Step 6: Final answer
    x = 7,148.05

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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.