Home / 12,526.50-17,281.80-8,279.58

Finding the Fourth Proportional to 12,526.50, 17,281.80 and 8,279.58

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Solution

The fourth proportional to 12,526.50, 17,281.80 and 8,279.58 is: 11,422.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,526.50 : 17,281.80 = 8,279.58 : x
  2. Step 2: Convert to fraction form
    12,526.50/17,281.80 = 8,279.58/x
  3. Step 3: Cross multiply
    12,526.50x = 17,281.80 × 8,279.58
  4. Step 4: Simplify right side
    12,526.50x = 143,086,045.64
  5. Step 5: Solve for x
    x = 143,086,045.64/12,526.50
  6. Step 6: Final answer
    x = 11,422.67

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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.