Home / 15,588.60-21,512.38-8,515.02

Finding the Fourth Proportional to 15,588.60, 21,512.38 and 8,515.02

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Solution

The fourth proportional to 15,588.60, 21,512.38 and 8,515.02 is: 11,750.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,588.60 : 21,512.38 = 8,515.02 : x
  2. Step 2: Convert to fraction form
    15,588.60/21,512.38 = 8,515.02/x
  3. Step 3: Cross multiply
    15,588.60x = 21,512.38 × 8,515.02
  4. Step 4: Simplify right side
    15,588.60x = 183,178,195.81
  5. Step 5: Solve for x
    x = 183,178,195.81/15,588.60
  6. Step 6: Final answer
    x = 11,750.78

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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.