Home / 13,158.57-19,741.50-7,319.28

Finding the Fourth Proportional to 13,158.57, 19,741.50 and 7,319.28

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Solution

The fourth proportional to 13,158.57, 19,741.50 and 7,319.28 is: 10,980.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,158.57 : 19,741.50 = 7,319.28 : x
  2. Step 2: Convert to fraction form
    13,158.57/19,741.50 = 7,319.28/x
  3. Step 3: Cross multiply
    13,158.57x = 19,741.50 × 7,319.28
  4. Step 4: Simplify right side
    13,158.57x = 144,493,566.12
  5. Step 5: Solve for x
    x = 144,493,566.12/13,158.57
  6. Step 6: Final answer
    x = 10,980.95

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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.