Home / 15,154.16-20,914.81-9,581.36

Finding the Fourth Proportional to 15,154.16, 20,914.81 and 9,581.36

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Solution

The fourth proportional to 15,154.16, 20,914.81 and 9,581.36 is: 13,223.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,154.16 : 20,914.81 = 9,581.36 : x
  2. Step 2: Convert to fraction form
    15,154.16/20,914.81 = 9,581.36/x
  3. Step 3: Cross multiply
    15,154.16x = 20,914.81 × 9,581.36
  4. Step 4: Simplify right side
    15,154.16x = 200,392,195.41
  5. Step 5: Solve for x
    x = 200,392,195.41/15,154.16
  6. Step 6: Final answer
    x = 13,223.58

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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.