Home / 10,130.60-15,188.70-3,888.20

Finding the Fourth Proportional to 10,130.60, 15,188.70 and 3,888.20

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Solution

The fourth proportional to 10,130.60, 15,188.70 and 3,888.20 is: 5,829.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,130.60 : 15,188.70 = 3,888.20 : x
  2. Step 2: Convert to fraction form
    10,130.60/15,188.70 = 3,888.20/x
  3. Step 3: Cross multiply
    10,130.60x = 15,188.70 × 3,888.20
  4. Step 4: Simplify right side
    10,130.60x = 59,056,703.34
  5. Step 5: Solve for x
    x = 59,056,703.34/10,130.60
  6. Step 6: Final answer
    x = 5,829.54

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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.