Home / 12,302.48-18,485.40-10,228.88

Finding the Fourth Proportional to 12,302.48, 18,485.40 and 10,228.88

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Solution

The fourth proportional to 12,302.48, 18,485.40 and 10,228.88 is: 15,369.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,302.48 : 18,485.40 = 10,228.88 : x
  2. Step 2: Convert to fraction form
    12,302.48/18,485.40 = 10,228.88/x
  3. Step 3: Cross multiply
    12,302.48x = 18,485.40 × 10,228.88
  4. Step 4: Simplify right side
    12,302.48x = 189,084,938.35
  5. Step 5: Solve for x
    x = 189,084,938.35/12,302.48
  6. Step 6: Final answer
    x = 15,369.66

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1.5x scale

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.