Home / 15,152.58-20,909.94-8,438.03

Finding the Fourth Proportional to 15,152.58, 20,909.94 and 8,438.03

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Solution

The fourth proportional to 15,152.58, 20,909.94 and 8,438.03 is: 11,644.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,152.58 : 20,909.94 = 8,438.03 : x
  2. Step 2: Convert to fraction form
    15,152.58/20,909.94 = 8,438.03/x
  3. Step 3: Cross multiply
    15,152.58x = 20,909.94 × 8,438.03
  4. Step 4: Simplify right side
    15,152.58x = 176,438,701.02
  5. Step 5: Solve for x
    x = 176,438,701.02/15,152.58
  6. Step 6: Final answer
    x = 11,644.14

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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.