Home / 13,288.70-18,339.70-9,925.68

Finding the Fourth Proportional to 13,288.70, 18,339.70 and 9,925.68

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Solution

The fourth proportional to 13,288.70, 18,339.70 and 9,925.68 is: 13,698.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,288.70 : 18,339.70 = 9,925.68 : x
  2. Step 2: Convert to fraction form
    13,288.70/18,339.70 = 9,925.68/x
  3. Step 3: Cross multiply
    13,288.70x = 18,339.70 × 9,925.68
  4. Step 4: Simplify right side
    13,288.70x = 182,033,993.50
  5. Step 5: Solve for x
    x = 182,033,993.50/13,288.70
  6. Step 6: Final answer
    x = 13,698.40

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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.