Home / 15,581.80-21,504.72-8,869.60

Finding the Fourth Proportional to 15,581.80, 21,504.72 and 8,869.60

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Solution

The fourth proportional to 15,581.80, 21,504.72 and 8,869.60 is: 12,241.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,581.80 : 21,504.72 = 8,869.60 : x
  2. Step 2: Convert to fraction form
    15,581.80/21,504.72 = 8,869.60/x
  3. Step 3: Cross multiply
    15,581.80x = 21,504.72 × 8,869.60
  4. Step 4: Simplify right side
    15,581.80x = 190,738,264.51
  5. Step 5: Solve for x
    x = 190,738,264.51/15,581.80
  6. Step 6: Final answer
    x = 12,241.09

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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.