Home / 15,122.04-20,858.05-9,143.34

Finding the Fourth Proportional to 15,122.04, 20,858.05 and 9,143.34

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Solution

The fourth proportional to 15,122.04, 20,858.05 and 9,143.34 is: 12,611.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,122.04 : 20,858.05 = 9,143.34 : x
  2. Step 2: Convert to fraction form
    15,122.04/20,858.05 = 9,143.34/x
  3. Step 3: Cross multiply
    15,122.04x = 20,858.05 × 9,143.34
  4. Step 4: Simplify right side
    15,122.04x = 190,712,242.89
  5. Step 5: Solve for x
    x = 190,712,242.89/15,122.04
  6. Step 6: Final answer
    x = 12,611.54

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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.