Home / 15,295.53-21,117.28-10,198.21

Finding the Fourth Proportional to 15,295.53, 21,117.28 and 10,198.21

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Solution

The fourth proportional to 15,295.53, 21,117.28 and 10,198.21 is: 14,079.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,295.53 : 21,117.28 = 10,198.21 : x
  2. Step 2: Convert to fraction form
    15,295.53/21,117.28 = 10,198.21/x
  3. Step 3: Cross multiply
    15,295.53x = 21,117.28 × 10,198.21
  4. Step 4: Simplify right side
    15,295.53x = 215,358,515.69
  5. Step 5: Solve for x
    x = 215,358,515.69/15,295.53
  6. Step 6: Final answer
    x = 14,079.84

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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.