Home / 28,449.36-42,679.98-8,730.72

Finding the Fourth Proportional to 28,449.36, 42,679.98 and 8,730.72

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Solution

The fourth proportional to 28,449.36, 42,679.98 and 8,730.72 is: 13,097.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,449.36 : 42,679.98 = 8,730.72 : x
  2. Step 2: Convert to fraction form
    28,449.36/42,679.98 = 8,730.72/x
  3. Step 3: Cross multiply
    28,449.36x = 42,679.98 × 8,730.72
  4. Step 4: Simplify right side
    28,449.36x = 372,626,954.99
  5. Step 5: Solve for x
    x = 372,626,954.99/28,449.36
  6. Step 6: Final answer
    x = 13,097.90

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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.