Home / 15,756.43-21,744.53-9,042.34

Finding the Fourth Proportional to 15,756.43, 21,744.53 and 9,042.34

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Solution

The fourth proportional to 15,756.43, 21,744.53 and 9,042.34 is: 12,478.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,756.43 : 21,744.53 = 9,042.34 : x
  2. Step 2: Convert to fraction form
    15,756.43/21,744.53 = 9,042.34/x
  3. Step 3: Cross multiply
    15,756.43x = 21,744.53 × 9,042.34
  4. Step 4: Simplify right side
    15,756.43x = 196,621,388.19
  5. Step 5: Solve for x
    x = 196,621,388.19/15,756.43
  6. Step 6: Final answer
    x = 12,478.80

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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.