Home / 13,155.68-18,153.60-8,898.08

Finding the Fourth Proportional to 13,155.68, 18,153.60 and 8,898.08

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Solution

The fourth proportional to 13,155.68, 18,153.60 and 8,898.08 is: 12,278.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,155.68 : 18,153.60 = 8,898.08 : x
  2. Step 2: Convert to fraction form
    13,155.68/18,153.60 = 8,898.08/x
  3. Step 3: Cross multiply
    13,155.68x = 18,153.60 × 8,898.08
  4. Step 4: Simplify right side
    13,155.68x = 161,532,185.09
  5. Step 5: Solve for x
    x = 161,532,185.09/13,155.68
  6. Step 6: Final answer
    x = 12,278.51

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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.