Home / 15,506.34-21,399.68-9,137.18

Finding the Fourth Proportional to 15,506.34, 21,399.68 and 9,137.18

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Solution

The fourth proportional to 15,506.34, 21,399.68 and 9,137.18 is: 12,609.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,506.34 : 21,399.68 = 9,137.18 : x
  2. Step 2: Convert to fraction form
    15,506.34/21,399.68 = 9,137.18/x
  3. Step 3: Cross multiply
    15,506.34x = 21,399.68 × 9,137.18
  4. Step 4: Simplify right side
    15,506.34x = 195,532,621.10
  5. Step 5: Solve for x
    x = 195,532,621.10/15,506.34
  6. Step 6: Final answer
    x = 12,609.85

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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.