Home / 18,999.18-28,500.59-4,959.45

Finding the Fourth Proportional to 18,999.18, 28,500.59 and 4,959.45

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Solution

The fourth proportional to 18,999.18, 28,500.59 and 4,959.45 is: 7,439.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,999.18 : 28,500.59 = 4,959.45 : x
  2. Step 2: Convert to fraction form
    18,999.18/28,500.59 = 4,959.45/x
  3. Step 3: Cross multiply
    18,999.18x = 28,500.59 × 4,959.45
  4. Step 4: Simplify right side
    18,999.18x = 141,347,263.47
  5. Step 5: Solve for x
    x = 141,347,263.47/18,999.18
  6. Step 6: Final answer
    x = 7,439.65

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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.