Home / 13,915.60-20,875.56-4,680.88

Finding the Fourth Proportional to 13,915.60, 20,875.56 and 4,680.88

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Solution

The fourth proportional to 13,915.60, 20,875.56 and 4,680.88 is: 7,022.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,915.60 : 20,875.56 = 4,680.88 : x
  2. Step 2: Convert to fraction form
    13,915.60/20,875.56 = 4,680.88/x
  3. Step 3: Cross multiply
    13,915.60x = 20,875.56 × 4,680.88
  4. Step 4: Simplify right side
    13,915.60x = 97,715,863.51
  5. Step 5: Solve for x
    x = 97,715,863.51/13,915.60
  6. Step 6: Final answer
    x = 7,022.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.