Home / 15,409.57-21,265.20-8,335.98

Finding the Fourth Proportional to 15,409.57, 21,265.20 and 8,335.98

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Solution

The fourth proportional to 15,409.57, 21,265.20 and 8,335.98 is: 11,503.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,409.57 : 21,265.20 = 8,335.98 : x
  2. Step 2: Convert to fraction form
    15,409.57/21,265.20 = 8,335.98/x
  3. Step 3: Cross multiply
    15,409.57x = 21,265.20 × 8,335.98
  4. Step 4: Simplify right side
    15,409.57x = 177,266,281.90
  5. Step 5: Solve for x
    x = 177,266,281.90/15,409.57
  6. Step 6: Final answer
    x = 11,503.65

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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.