Home / 18,999.05-28,498.57-5,148.05

Finding the Fourth Proportional to 18,999.05, 28,498.57 and 5,148.05

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Solution

The fourth proportional to 18,999.05, 28,498.57 and 5,148.05 is: 7,722.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,999.05 : 28,498.57 = 5,148.05 : x
  2. Step 2: Convert to fraction form
    18,999.05/28,498.57 = 5,148.05/x
  3. Step 3: Cross multiply
    18,999.05x = 28,498.57 × 5,148.05
  4. Step 4: Simplify right side
    18,999.05x = 146,712,063.29
  5. Step 5: Solve for x
    x = 146,712,063.29/18,999.05
  6. Step 6: Final answer
    x = 7,722.07

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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.