Home / 13,288.20-18,339.01-9,925.18

Finding the Fourth Proportional to 13,288.20, 18,339.01 and 9,925.18

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Solution

The fourth proportional to 13,288.20, 18,339.01 and 9,925.18 is: 13,697.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,288.20 : 18,339.01 = 9,925.18 : x
  2. Step 2: Convert to fraction form
    13,288.20/18,339.01 = 9,925.18/x
  3. Step 3: Cross multiply
    13,288.20x = 18,339.01 × 9,925.18
  4. Step 4: Simplify right side
    13,288.20x = 182,017,975.27
  5. Step 5: Solve for x
    x = 182,017,975.27/13,288.20
  6. Step 6: Final answer
    x = 13,697.71

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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.