Home / 15,915.35-21,960.72-9,199.67

Finding the Fourth Proportional to 15,915.35, 21,960.72 and 9,199.67

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Solution

The fourth proportional to 15,915.35, 21,960.72 and 9,199.67 is: 12,694.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,915.35 : 21,960.72 = 9,199.67 : x
  2. Step 2: Convert to fraction form
    15,915.35/21,960.72 = 9,199.67/x
  3. Step 3: Cross multiply
    15,915.35x = 21,960.72 × 9,199.67
  4. Step 4: Simplify right side
    15,915.35x = 202,031,267.16
  5. Step 5: Solve for x
    x = 202,031,267.16/15,915.35
  6. Step 6: Final answer
    x = 12,694.12

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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.