Home / 12,090.67-18,127.50-4,688.89

Finding the Fourth Proportional to 12,090.67, 18,127.50 and 4,688.89

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Solution

The fourth proportional to 12,090.67, 18,127.50 and 4,688.89 is: 7,030.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,090.67 : 18,127.50 = 4,688.89 : x
  2. Step 2: Convert to fraction form
    12,090.67/18,127.50 = 4,688.89/x
  3. Step 3: Cross multiply
    12,090.67x = 18,127.50 × 4,688.89
  4. Step 4: Simplify right side
    12,090.67x = 84,997,853.48
  5. Step 5: Solve for x
    x = 84,997,853.48/12,090.67
  6. Step 6: Final answer
    x = 7,030.04

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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.