Home / 15,487.04-21,370.60-8,771.32

Finding the Fourth Proportional to 15,487.04, 21,370.60 and 8,771.32

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Solution

The fourth proportional to 15,487.04, 21,370.60 and 8,771.32 is: 12,103.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,487.04 : 21,370.60 = 8,771.32 : x
  2. Step 2: Convert to fraction form
    15,487.04/21,370.60 = 8,771.32/x
  3. Step 3: Cross multiply
    15,487.04x = 21,370.60 × 8,771.32
  4. Step 4: Simplify right side
    15,487.04x = 187,448,371.19
  5. Step 5: Solve for x
    x = 187,448,371.19/15,487.04
  6. Step 6: Final answer
    x = 12,103.56

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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.