Home / 15,661.04-21,613.12-9,291.41

Finding the Fourth Proportional to 15,661.04, 21,613.12 and 9,291.41

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Solution

The fourth proportional to 15,661.04, 21,613.12 and 9,291.41 is: 12,822.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,661.04 : 21,613.12 = 9,291.41 : x
  2. Step 2: Convert to fraction form
    15,661.04/21,613.12 = 9,291.41/x
  3. Step 3: Cross multiply
    15,661.04x = 21,613.12 × 9,291.41
  4. Step 4: Simplify right side
    15,661.04x = 200,816,359.30
  5. Step 5: Solve for x
    x = 200,816,359.30/15,661.04
  6. Step 6: Final answer
    x = 12,822.67

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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.