Home / 15,890.72-21,931.14-9,176.34

Finding the Fourth Proportional to 15,890.72, 21,931.14 and 9,176.34

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Solution

The fourth proportional to 15,890.72, 21,931.14 and 9,176.34 is: 12,664.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,890.72 : 21,931.14 = 9,176.34 : x
  2. Step 2: Convert to fraction form
    15,890.72/21,931.14 = 9,176.34/x
  3. Step 3: Cross multiply
    15,890.72x = 21,931.14 × 9,176.34
  4. Step 4: Simplify right side
    15,890.72x = 201,247,597.23
  5. Step 5: Solve for x
    x = 201,247,597.23/15,890.72
  6. Step 6: Final answer
    x = 12,664.47

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Similar ratio
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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.