Home / 12,090.24-18,126.85-4,688.46

Finding the Fourth Proportional to 12,090.24, 18,126.85 and 4,688.46

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Solution

The fourth proportional to 12,090.24, 18,126.85 and 4,688.46 is: 7,029.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,090.24 : 18,126.85 = 4,688.46 : x
  2. Step 2: Convert to fraction form
    12,090.24/18,126.85 = 4,688.46/x
  3. Step 3: Cross multiply
    12,090.24x = 18,126.85 × 4,688.46
  4. Step 4: Simplify right side
    12,090.24x = 84,986,897.07
  5. Step 5: Solve for x
    x = 84,986,897.07/12,090.24
  6. Step 6: Final answer
    x = 7,029.38

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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.