Home / 10,520.87-15,783.73-3,125.16

Finding the Fourth Proportional to 10,520.87, 15,783.73 and 3,125.16

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Solution

The fourth proportional to 10,520.87, 15,783.73 and 3,125.16 is: 4,688.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,520.87 : 15,783.73 = 3,125.16 : x
  2. Step 2: Convert to fraction form
    10,520.87/15,783.73 = 3,125.16/x
  3. Step 3: Cross multiply
    10,520.87x = 15,783.73 × 3,125.16
  4. Step 4: Simplify right side
    10,520.87x = 49,326,673.83
  5. Step 5: Solve for x
    x = 49,326,673.83/10,520.87
  6. Step 6: Final answer
    x = 4,688.46

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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.