Home / 15,323.40-21,145.50-8,609.32

Finding the Fourth Proportional to 15,323.40, 21,145.50 and 8,609.32

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Solution

The fourth proportional to 15,323.40, 21,145.50 and 8,609.32 is: 11,880.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,323.40 : 21,145.50 = 8,609.32 : x
  2. Step 2: Convert to fraction form
    15,323.40/21,145.50 = 8,609.32/x
  3. Step 3: Cross multiply
    15,323.40x = 21,145.50 × 8,609.32
  4. Step 4: Simplify right side
    15,323.40x = 182,048,376.06
  5. Step 5: Solve for x
    x = 182,048,376.06/15,323.40
  6. Step 6: Final answer
    x = 11,880.42

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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.