Home / 15,445.24-21,313.38-8,731.12

Finding the Fourth Proportional to 15,445.24, 21,313.38 and 8,731.12

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Solution

The fourth proportional to 15,445.24, 21,313.38 and 8,731.12 is: 12,048.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,445.24 : 21,313.38 = 8,731.12 : x
  2. Step 2: Convert to fraction form
    15,445.24/21,313.38 = 8,731.12/x
  3. Step 3: Cross multiply
    15,445.24x = 21,313.38 × 8,731.12
  4. Step 4: Simplify right side
    15,445.24x = 186,089,678.39
  5. Step 5: Solve for x
    x = 186,089,678.39/15,445.24
  6. Step 6: Final answer
    x = 12,048.35

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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.