Home / 9,688.40-14,550.20-8,478.80

Finding the Fourth Proportional to 9,688.40, 14,550.20 and 8,478.80

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Solution

The fourth proportional to 9,688.40, 14,550.20 and 8,478.80 is: 12,733.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,688.40 : 14,550.20 = 8,478.80 : x
  2. Step 2: Convert to fraction form
    9,688.40/14,550.20 = 8,478.80/x
  3. Step 3: Cross multiply
    9,688.40x = 14,550.20 × 8,478.80
  4. Step 4: Simplify right side
    9,688.40x = 123,368,235.76
  5. Step 5: Solve for x
    x = 123,368,235.76/9,688.40
  6. Step 6: Final answer
    x = 12,733.60

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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.