Home / 15,578.28-21,490.55-10,198.35

Finding the Fourth Proportional to 15,578.28, 21,490.55 and 10,198.35

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Solution

The fourth proportional to 15,578.28, 21,490.55 and 10,198.35 is: 14,068.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,578.28 : 21,490.55 = 10,198.35 : x
  2. Step 2: Convert to fraction form
    15,578.28/21,490.55 = 10,198.35/x
  3. Step 3: Cross multiply
    15,578.28x = 21,490.55 × 10,198.35
  4. Step 4: Simplify right side
    15,578.28x = 219,168,099.60
  5. Step 5: Solve for x
    x = 219,168,099.60/15,578.28
  6. Step 6: Final answer
    x = 14,068.83

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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.