Home / 12,280.60-18,423.78-4,885.48

Finding the Fourth Proportional to 12,280.60, 18,423.78 and 4,885.48

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Solution

The fourth proportional to 12,280.60, 18,423.78 and 4,885.48 is: 7,329.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,280.60 : 18,423.78 = 4,885.48 : x
  2. Step 2: Convert to fraction form
    12,280.60/18,423.78 = 4,885.48/x
  3. Step 3: Cross multiply
    12,280.60x = 18,423.78 × 4,885.48
  4. Step 4: Simplify right side
    12,280.60x = 90,009,008.71
  5. Step 5: Solve for x
    x = 90,009,008.71/12,280.60
  6. Step 6: Final answer
    x = 7,329.37

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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.