Home / 15,453.08-21,302.86-10,138.68

Finding the Fourth Proportional to 15,453.08, 21,302.86 and 10,138.68

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Solution

The fourth proportional to 15,453.08, 21,302.86 and 10,138.68 is: 13,976.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,453.08 : 21,302.86 = 10,138.68 : x
  2. Step 2: Convert to fraction form
    15,453.08/21,302.86 = 10,138.68/x
  3. Step 3: Cross multiply
    15,453.08x = 21,302.86 × 10,138.68
  4. Step 4: Simplify right side
    15,453.08x = 215,982,880.62
  5. Step 5: Solve for x
    x = 215,982,880.62/15,453.08
  6. Step 6: Final answer
    x = 13,976.69

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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.