Home / 15,445.09-21,313.55-8,732.21

Finding the Fourth Proportional to 15,445.09, 21,313.55 and 8,732.21

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Solution

The fourth proportional to 15,445.09, 21,313.55 and 8,732.21 is: 12,050.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,445.09 : 21,313.55 = 8,732.21 : x
  2. Step 2: Convert to fraction form
    15,445.09/21,313.55 = 8,732.21/x
  3. Step 3: Cross multiply
    15,445.09x = 21,313.55 × 8,732.21
  4. Step 4: Simplify right side
    15,445.09x = 186,114,350.78
  5. Step 5: Solve for x
    x = 186,114,350.78/15,445.09
  6. Step 6: Final answer
    x = 12,050.07

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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.