Home / 10,100.64-15,152.40-2,985.60

Finding the Fourth Proportional to 10,100.64, 15,152.40 and 2,985.60

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Solution

The fourth proportional to 10,100.64, 15,152.40 and 2,985.60 is: 4,478.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,100.64 : 15,152.40 = 2,985.60 : x
  2. Step 2: Convert to fraction form
    10,100.64/15,152.40 = 2,985.60/x
  3. Step 3: Cross multiply
    10,100.64x = 15,152.40 × 2,985.60
  4. Step 4: Simplify right side
    10,100.64x = 45,239,005.44
  5. Step 5: Solve for x
    x = 45,239,005.44/10,100.64
  6. Step 6: Final answer
    x = 4,478.83

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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.