Home / 14,855.40-20,506.78-10,011.20

Finding the Fourth Proportional to 14,855.40, 20,506.78 and 10,011.20

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Solution

The fourth proportional to 14,855.40, 20,506.78 and 10,011.20 is: 13,819.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,855.40 : 20,506.78 = 10,011.20 : x
  2. Step 2: Convert to fraction form
    14,855.40/20,506.78 = 10,011.20/x
  3. Step 3: Cross multiply
    14,855.40x = 20,506.78 × 10,011.20
  4. Step 4: Simplify right side
    14,855.40x = 205,297,475.94
  5. Step 5: Solve for x
    x = 205,297,475.94/14,855.40
  6. Step 6: Final answer
    x = 13,819.72

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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.