Home / 15,756.05-21,742.36-9,042.23

Finding the Fourth Proportional to 15,756.05, 21,742.36 and 9,042.23

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Solution

The fourth proportional to 15,756.05, 21,742.36 and 9,042.23 is: 12,477.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,756.05 : 21,742.36 = 9,042.23 : x
  2. Step 2: Convert to fraction form
    15,756.05/21,742.36 = 9,042.23/x
  3. Step 3: Cross multiply
    15,756.05x = 21,742.36 × 9,042.23
  4. Step 4: Simplify right side
    15,756.05x = 196,599,265.94
  5. Step 5: Solve for x
    x = 196,599,265.94/15,756.05
  6. Step 6: Final answer
    x = 12,477.70

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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.