Home / 10,520.05-15,782.51-3,124.35

Finding the Fourth Proportional to 10,520.05, 15,782.51 and 3,124.35

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Solution

The fourth proportional to 10,520.05, 15,782.51 and 3,124.35 is: 4,687.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,520.05 : 15,782.51 = 3,124.35 : x
  2. Step 2: Convert to fraction form
    10,520.05/15,782.51 = 3,124.35/x
  3. Step 3: Cross multiply
    10,520.05x = 15,782.51 × 3,124.35
  4. Step 4: Simplify right side
    10,520.05x = 49,310,085.12
  5. Step 5: Solve for x
    x = 49,310,085.12/10,520.05
  6. Step 6: Final answer
    x = 4,687.25

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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.