Home / 18,299.89-27,430.40-7,205.05

Finding the Fourth Proportional to 18,299.89, 27,430.40 and 7,205.05

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Solution

The fourth proportional to 18,299.89, 27,430.40 and 7,205.05 is: 10,799.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,299.89 : 27,430.40 = 7,205.05 : x
  2. Step 2: Convert to fraction form
    18,299.89/27,430.40 = 7,205.05/x
  3. Step 3: Cross multiply
    18,299.89x = 27,430.40 × 7,205.05
  4. Step 4: Simplify right side
    18,299.89x = 197,637,415.29
  5. Step 5: Solve for x
    x = 197,637,415.29/18,299.89
  6. Step 6: Final answer
    x = 10,799.92

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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.