Home / 15,406.14-21,265.92-9,118.50

Finding the Fourth Proportional to 15,406.14, 21,265.92 and 9,118.50

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Solution

The fourth proportional to 15,406.14, 21,265.92 and 9,118.50 is: 12,586.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,406.14 : 21,265.92 = 9,118.50 : x
  2. Step 2: Convert to fraction form
    15,406.14/21,265.92 = 9,118.50/x
  3. Step 3: Cross multiply
    15,406.14x = 21,265.92 × 9,118.50
  4. Step 4: Simplify right side
    15,406.14x = 193,913,291.52
  5. Step 5: Solve for x
    x = 193,913,291.52/15,406.14
  6. Step 6: Final answer
    x = 12,586.75

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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.