Home / 12,399.30-18,602.58-4,999.95

Finding the Fourth Proportional to 12,399.30, 18,602.58 and 4,999.95

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Solution

The fourth proportional to 12,399.30, 18,602.58 and 4,999.95 is: 7,501.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,399.30 : 18,602.58 = 4,999.95 : x
  2. Step 2: Convert to fraction form
    12,399.30/18,602.58 = 4,999.95/x
  3. Step 3: Cross multiply
    12,399.30x = 18,602.58 × 4,999.95
  4. Step 4: Simplify right side
    12,399.30x = 93,011,969.87
  5. Step 5: Solve for x
    x = 93,011,969.87/12,399.30
  6. Step 6: Final answer
    x = 7,501.39

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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.