Home / 15,438.50-21,300.18-9,467.18

Finding the Fourth Proportional to 15,438.50, 21,300.18 and 9,467.18

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Solution

The fourth proportional to 15,438.50, 21,300.18 and 9,467.18 is: 13,061.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,438.50 : 21,300.18 = 9,467.18 : x
  2. Step 2: Convert to fraction form
    15,438.50/21,300.18 = 9,467.18/x
  3. Step 3: Cross multiply
    15,438.50x = 21,300.18 × 9,467.18
  4. Step 4: Simplify right side
    15,438.50x = 201,652,638.09
  5. Step 5: Solve for x
    x = 201,652,638.09/15,438.50
  6. Step 6: Final answer
    x = 13,061.67

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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.