Home / 10,300.54-15,450.78-8,909.74

Finding the Fourth Proportional to 10,300.54, 15,450.78 and 8,909.74

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Solution

The fourth proportional to 10,300.54, 15,450.78 and 8,909.74 is: 13,364.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,300.54 : 15,450.78 = 8,909.74 : x
  2. Step 2: Convert to fraction form
    10,300.54/15,450.78 = 8,909.74/x
  3. Step 3: Cross multiply
    10,300.54x = 15,450.78 × 8,909.74
  4. Step 4: Simplify right side
    10,300.54x = 137,662,432.60
  5. Step 5: Solve for x
    x = 137,662,432.60/10,300.54
  6. Step 6: Final answer
    x = 13,364.58

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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.