Home / 10,509.05-15,763.51-3,113.55

Finding the Fourth Proportional to 10,509.05, 15,763.51 and 3,113.55

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Solution

The fourth proportional to 10,509.05, 15,763.51 and 3,113.55 is: 4,670.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,509.05 : 15,763.51 = 3,113.55 : x
  2. Step 2: Convert to fraction form
    10,509.05/15,763.51 = 3,113.55/x
  3. Step 3: Cross multiply
    10,509.05x = 15,763.51 × 3,113.55
  4. Step 4: Simplify right side
    10,509.05x = 49,080,476.56
  5. Step 5: Solve for x
    x = 49,080,476.56/10,509.05
  6. Step 6: Final answer
    x = 4,670.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.