Home / 15,450.64-21,310.55-10,143.52

Finding the Fourth Proportional to 15,450.64, 21,310.55 and 10,143.52

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Solution

The fourth proportional to 15,450.64, 21,310.55 and 10,143.52 is: 13,990.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,450.64 : 21,310.55 = 10,143.52 : x
  2. Step 2: Convert to fraction form
    15,450.64/21,310.55 = 10,143.52/x
  3. Step 3: Cross multiply
    15,450.64x = 21,310.55 × 10,143.52
  4. Step 4: Simplify right side
    15,450.64x = 216,163,990.14
  5. Step 5: Solve for x
    x = 216,163,990.14/15,450.64
  6. Step 6: Final answer
    x = 13,990.62

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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.