Home / 15,359.90-21,200.13-9,396.54

Finding the Fourth Proportional to 15,359.90, 21,200.13 and 9,396.54

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Solution

The fourth proportional to 15,359.90, 21,200.13 and 9,396.54 is: 12,969.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,359.90 : 21,200.13 = 9,396.54 : x
  2. Step 2: Convert to fraction form
    15,359.90/21,200.13 = 9,396.54/x
  3. Step 3: Cross multiply
    15,359.90x = 21,200.13 × 9,396.54
  4. Step 4: Simplify right side
    15,359.90x = 199,207,869.55
  5. Step 5: Solve for x
    x = 199,207,869.55/15,359.90
  6. Step 6: Final answer
    x = 12,969.35

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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.