Home / 12,378.59-18,559.58-4,875.29

Finding the Fourth Proportional to 12,378.59, 18,559.58 and 4,875.29

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Solution

The fourth proportional to 12,378.59, 18,559.58 and 4,875.29 is: 7,309.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,378.59 : 18,559.58 = 4,875.29 : x
  2. Step 2: Convert to fraction form
    12,378.59/18,559.58 = 4,875.29/x
  3. Step 3: Cross multiply
    12,378.59x = 18,559.58 × 4,875.29
  4. Step 4: Simplify right side
    12,378.59x = 90,483,217.60
  5. Step 5: Solve for x
    x = 90,483,217.60/12,378.59
  6. Step 6: Final answer
    x = 7,309.66

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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.