Home / 18,915.04-28,390.08-9,561.67

Finding the Fourth Proportional to 18,915.04, 28,390.08 and 9,561.67

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Solution

The fourth proportional to 18,915.04, 28,390.08 and 9,561.67 is: 14,351.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,915.04 : 28,390.08 = 9,561.67 : x
  2. Step 2: Convert to fraction form
    18,915.04/28,390.08 = 9,561.67/x
  3. Step 3: Cross multiply
    18,915.04x = 28,390.08 × 9,561.67
  4. Step 4: Simplify right side
    18,915.04x = 271,456,576.23
  5. Step 5: Solve for x
    x = 271,456,576.23/18,915.04
  6. Step 6: Final answer
    x = 14,351.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.